356 lines
14 KiB
Rust
356 lines
14 KiB
Rust
//! this example positions buffers adjacently and uses an ASYMMETRIC coil winding.
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//! v.s. the fourth prototype, it changes the couplings in an attempt to reduce unwanted
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//! clock -> mem2 coupling
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use coremem::{Driver, mat, meas, SpirvDriver};
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use coremem::geom::{region, Cube, Dilate, Meters, Region, Spiral, SwapYZ, Torus, Translate, Wrap};
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use coremem::stim::{CurlStimulus, Gated, Sinusoid1, TimeVarying1 as _};
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use log::info;
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#[allow(unused)]
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use coremem::geom::{Coord as _, Region as _};
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#[derive(Copy, Clone, Debug)]
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struct Params {
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feat_size: f32,
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buffer_xy: f32,
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buffer_z: f32,
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boundary_xy: f32,
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boundary_z: f32,
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ferro_major: f32,
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ferro_minor: f32,
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ferro_buffer: f32, // horizontal space between ferros,
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wire_minor: f32,
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wire_wrap_minor: f32, // 2x wire_wrap_minor + feat_size must be < ferro_buffer
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wire_set_major: f32,
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wire_wrap_dilation: f32,
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wire_wrap_iters: usize,
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wraps1: f32,
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wraps2: f32,
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wire_conductivity: f32,
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peak_set_current: f32,
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peak_clock_current: f32,
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set_duration: f32,
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clock_duration: f32,
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pre_time: f32, // how long between set and clock
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post_time: f32, // how long to wait after the clock
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dump_frames: Option<u64>,
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}
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fn run_sim(id: u32, p: Params) {
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let m_to_um = |m: f32| (m * 1e6).round() as u32;
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let feat_vol = p.feat_size * p.feat_size * p.feat_size;
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let base = format!("buffer5-{}", id);
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let width = 4.0*p.ferro_major + 2.0*(p.buffer_xy + p.boundary_xy + p.wire_set_major + p.wire_minor) + p.ferro_buffer;
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let height = 2.0*(p.ferro_major + p.ferro_minor + 4.0*p.wire_wrap_minor + 12.0*p.feat_size + p.buffer_xy + p.boundary_xy);
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let depth = 2.0*(p.wire_set_major.max(4.0*p.wire_wrap_minor + p.ferro_minor + p.feat_size) + p.wire_minor + p.buffer_z + p.boundary_z);
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let ferro1_center = Meters::new(
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p.buffer_xy + p.boundary_xy + p.wire_set_major + p.wire_minor + p.ferro_major,
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p.buffer_xy + p.boundary_xy + p.ferro_major + p.ferro_minor + 4.0*p.wire_wrap_minor + 12.0*p.feat_size,
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0.5*depth,
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// buffer_z + boundary_z + wire_set_major + wire_minor
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);
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let ferro2_center = ferro1_center + Meters::new(2.0*p.ferro_major + p.ferro_buffer, 0.0, 0.0);
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let ferro_center = (ferro1_center + ferro2_center)*0.5;
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// reserve the left/right locations for the SET wires.
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let set1_center = ferro1_center - Meters::new_x(p.ferro_major);
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let set2_center = ferro2_center + Meters::new_x(p.ferro_major);
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let ferro1_region = Torus::new_xy(ferro1_center, p.ferro_major, p.ferro_minor);
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let ferro2_region = Torus::new_xy(ferro2_center, p.ferro_major, p.ferro_minor);
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let set1_region = Torus::new_xz(set1_center, p.wire_set_major, p.wire_minor);
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let set2_region = Torus::new_xz(set2_center, p.wire_set_major, p.wire_minor);
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let coupling_region1 = Dilate::new_iterated(
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Wrap::new_about(
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Translate::new(
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SwapYZ::new(region::and(
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Spiral::new(p.ferro_minor + 2.0*p.wire_wrap_minor + p.feat_size, p.wire_wrap_minor, 1.0/p.wraps1),
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Cube::new(Meters::new(-1.0, -1.0, -0.5), Meters::new(1.0, 1.0, 0.5))
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)),
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ferro1_center + Meters::new(1.0*p.ferro_major, 0.0, 0.0),
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),
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1.0, // one half-rev => y=1.0
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ferro1_center,
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),
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p.wire_wrap_dilation / (p.wire_wrap_iters as f32),
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p.wire_wrap_iters,
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);
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let coupling_region2 = Dilate::new_iterated(
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Wrap::new_about(
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Translate::new(
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SwapYZ::new(region::and_not(
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Spiral::new(p.ferro_minor + 2.0*p.wire_wrap_minor + p.feat_size, p.wire_wrap_minor, 1.0/p.wraps2),
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Cube::new(Meters::new(-1.0, -1.0, -0.5), Meters::new(1.0, 1.0, 0.5))
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)),
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ferro2_center + Meters::new_x(p.ferro_major),
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),
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1.0, // one half-rev => y=1.0
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ferro2_center,
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),
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p.wire_wrap_dilation / (p.wire_wrap_iters as f32),
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p.wire_wrap_iters,
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);
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let coupling_wire_top = Cube::new_centered(
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ferro_center - Meters::new_y(p.ferro_major + 4.0*p.wire_wrap_minor + 12.0*p.feat_size),
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Meters::new(p.ferro_buffer + 2.0*p.ferro_major + 4.0*p.feat_size, 2.0*p.feat_size, 2.0*p.feat_size)
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);
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let coupling_wire_bot = Cube::new_centered(
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ferro_center + Meters::new_y(p.ferro_major + 4.0*p.wire_wrap_minor + 12.0*p.feat_size),
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Meters::new(p.ferro_buffer + 2.0*p.ferro_major + 4.0*p.feat_size, 2.0*p.feat_size, 2.0*p.feat_size)
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);
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let coupling_stub_top_left = Cube::new_including_negatives(
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coupling_wire_top.bot_left_out(),
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coupling_wire_top.bot_left_out() + Meters::new(4.0*p.feat_size, 10.0*p.feat_size, 2.0*p.feat_size)
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);
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let coupling_stub_top_right = Cube::new_including_negatives(
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coupling_wire_top.bot_right_out(),
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coupling_wire_top.bot_right_out() + Meters::new(-4.0*p.feat_size, 10.0*p.feat_size, 2.0*p.feat_size)
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);
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let coupling_stub_bot_left = Cube::new_including_negatives(
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coupling_wire_bot.top_left_out(),
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coupling_wire_bot.top_left_out() + Meters::new(4.0*p.feat_size, -10.0*p.feat_size, 2.0*p.feat_size)
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);
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let coupling_stub_bot_right = Cube::new_including_negatives(
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coupling_wire_bot.top_right_out(),
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coupling_wire_bot.top_right_out() + Meters::new(-4.0*p.feat_size, -10.0*p.feat_size, 2.0*p.feat_size)
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);
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let coupling_stubs = region::Union::new()
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.with(coupling_stub_top_left.clone())
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.with(coupling_stub_top_right.clone())
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.with(coupling_stub_bot_left.clone())
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.with(coupling_stub_bot_right.clone())
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;
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let coupling_wires = region::Union::new()
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.with(coupling_wire_top.clone())
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.with(coupling_wire_bot.clone())
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.with(coupling_stubs.clone())
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;
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let coupling_region = region::Union::new()
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.with(coupling_region1.clone())
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.with(coupling_region2.clone())
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.with(coupling_wires.clone())
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;
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let wrap1_with_coupling = region::union(
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coupling_region1.clone(), coupling_wires.clone()
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);
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let wrap2_with_coupling = region::union(
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coupling_region2.clone(), coupling_wires.clone()
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);
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// show that the coupling top/bot wires are connected through the wrapping
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assert!(region::is_connected(
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&wrap1_with_coupling,
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coupling_wire_top.center(),
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coupling_wire_bot.center(),
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p.feat_size,
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), "{:?}", p);
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assert!(region::is_connected(
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&wrap2_with_coupling,
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coupling_wire_top.center(),
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coupling_wire_bot.center(),
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p.feat_size,
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), "{:?}", p);
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assert!(wrap1_with_coupling.contains(
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coupling_stub_top_left.center().to_index(p.feat_size).to_meters(p.feat_size),
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));
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assert!(wrap1_with_coupling.contains(
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coupling_stub_bot_left.center().to_index(p.feat_size).to_meters(p.feat_size),
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));
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assert!(wrap2_with_coupling.contains(
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coupling_stub_top_right.center().to_index(p.feat_size).to_meters(p.feat_size),
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));
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assert!(wrap2_with_coupling.contains(
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coupling_stub_bot_right.center().to_index(p.feat_size).to_meters(p.feat_size),
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));
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info!("wrap1 length: {}", region::distance_to(
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&wrap1_with_coupling,
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coupling_stub_top_left.center().to_index(p.feat_size),
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coupling_stub_bot_left.center().to_index(p.feat_size),
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p.feat_size,
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).unwrap());
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info!("wrap2 length: {}", region::distance_to(
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&wrap2_with_coupling,
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coupling_stub_top_right.center().to_index(p.feat_size),
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coupling_stub_bot_right.center().to_index(p.feat_size),
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p.feat_size,
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).unwrap());
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return;
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// mu_r=881.33, starting at H=25 to H=75.
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let ferro_mat = mat::MHPgram::new(25.0, 881.33, 44000.0);
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// let ferro_mat = mat::db::conductor(wire_conductivity);
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let wire_mat = mat::db::conductor(p.wire_conductivity);
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let mut driver: Driver<_> = Driver::new_spirv(Meters::new(width, height, depth), p.feat_size);
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driver.set_steps_per_stim(1000);
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driver.fill_region(&ferro1_region, ferro_mat);
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driver.fill_region(&ferro2_region, ferro_mat);
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driver.fill_region(&set1_region, wire_mat);
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driver.fill_region(&set2_region, wire_mat);
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driver.fill_region(&coupling_region, wire_mat);
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info!("boundary: {}um; {}um", m_to_um(p.boundary_xy), m_to_um(p.boundary_z));
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info!("size: {}, {}, {}", width, height, depth);
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info!("ferro1: {:?}", ferro1_center);
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info!("ferro2: {:?}", ferro2_center);
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driver.add_classical_boundary(Meters::new(p.boundary_xy, p.boundary_xy, p.boundary_z));
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assert!(driver.test_region_filled(&ferro1_region, ferro_mat));
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assert!(driver.test_region_filled(&ferro2_region, ferro_mat));
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assert!(driver.test_region_filled(&set1_region, wire_mat));
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assert!(driver.test_region_filled(&set2_region, wire_mat));
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assert!(driver.test_region_filled(&coupling_region, wire_mat));
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let add_drive_sine_pulse = |driver: &mut SpirvDriver, region: &Torus, start: f32, duration: f32, amp: f32| {
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let wave = Sinusoid1::from_wavelength(amp, duration * 2.0)
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.half_cycle()
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.shifted(start);
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driver.add_stimulus(CurlStimulus::new(
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region.clone(),
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wave.clone(),
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region.center(),
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region.axis()
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));
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};
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let add_drive_square_pulse = |driver: &mut SpirvDriver, region: &Torus, start: f32, duration: f32, amp: f32| {
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let wave = Gated::new(amp, start, start+duration);
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driver.add_stimulus(CurlStimulus::new(
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region.clone(),
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wave.clone(),
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region.center(),
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region.axis()
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));
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};
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let add_drive_step = |driver: &mut SpirvDriver, region: &Torus, start: f32, amp: f32| {
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add_drive_square_pulse(driver, region, start, 1.0, amp);
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};
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// J=\sigma E
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// dJ/dt = \sigma dE/dT
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// dE/dt = dJ/dt / \sigma
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// dE/dt = dI/dt / (A*\sigma)
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// if I = k*sin(w t) then dE/dt = k*w cos(w t) / (A*\sigma)
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// i.e. dE/dt is proportional to I/(A*\sigma), multiplied by w (or, divided by wavelength)
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let peak_set = p.peak_set_current / feat_vol / (set1_region.cross_section() * p.wire_conductivity);
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let peak_clock = p.peak_clock_current / feat_vol / (set1_region.cross_section() * p.wire_conductivity);
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// SET cores
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add_drive_sine_pulse(&mut driver, &set1_region, 0.01*p.set_duration, p.set_duration, -peak_set);
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add_drive_sine_pulse(&mut driver, &set2_region, 0.01*p.set_duration, p.set_duration, peak_set);
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// CLEAR core1
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add_drive_square_pulse(&mut driver, &set1_region, p.set_duration + p.pre_time, p.clock_duration, peak_clock);
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// add_drive_step(&mut driver, &set1_region, set_duration + pre_time, peak_clock);
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let duration = p.set_duration + p.pre_time + p.clock_duration + p.post_time;
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driver.add_measurement(meas::Volume::new("mem1", ferro1_region.clone()));
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driver.add_measurement(meas::MagneticLoop::new("mem1", ferro1_region.clone()));
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driver.add_measurement(meas::Volume::new("mem2", ferro2_region.clone()));
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driver.add_measurement(meas::MagneticLoop::new("mem2", ferro2_region.clone()));
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driver.add_measurement(meas::CurrentLoop::new("set1", set1_region.clone()));
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driver.add_measurement(meas::Power::new("set1", set1_region.clone()));
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driver.add_measurement(meas::CurrentLoop::new("set2", set2_region.clone()));
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// driver.add_measurement(meas::CurrentLoop::new("coupling1", coupling_region1.clone()));
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// driver.add_measurement(meas::CurrentLoop::new("coupling2", coupling_region2.clone()));
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driver.add_measurement(meas::Current::new("couplingtop", coupling_wire_top.clone()));
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driver.add_measurement(meas::Current::new("couplingbot", coupling_wire_bot.clone()));
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let prefix = format!("out/{}/{}-{}-{}setmA-{}setps-{}clkmA-{}clkps-{}um-{}:{}wraps",
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base,
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base,
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*driver.size(),
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(p.peak_set_current * 1e3).round() as i64,
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(p.set_duration * 1e12).round() as i64,
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(p.peak_clock_current * 1e3).round() as i64,
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(p.clock_duration * 1e12).round() as i64,
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(p.feat_size * 1e6).round() as i64,
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p.wraps1,
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p.wraps2,
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);
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let _ = std::fs::create_dir_all(&prefix);
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driver.add_state_file(&*format!("{}/state.bc", prefix), 16000);
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driver.add_serializer_renderer(&*format!("{}/frame-", prefix), 32000, p.dump_frames);
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driver.add_csv_renderer(&*format!("{}/meas.csv", prefix), 200, None);
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driver.add_csv_renderer(&*format!("{}/meas-sparse.csv", prefix), 8000, None);
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driver.step_until(duration);
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}
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fn main() {
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coremem::init_logging();
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for (i, dump_frames, wraps1, wraps2) in [
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// (38, Some(1000000), 20.0, 12.0),
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// (39, Some(1000000), 20.0, 8.0),
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// (51, Some(1000000), 16.0, 16.0),
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// (41, Some(1000000), 20.0, 20.0),
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// // (42, Some(1000000), 24.0, 12.0), // FAILS auto connection check
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// // (43, Some(1000000), 28.0, 12.0),
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// // (44, Some(1000000), 32.0, 12.0),
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// // (45, Some(1000000), 24.0, 16.0),
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// // (46, Some(1000000), 24.0, 20.0),
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(47, Some(1000000), 24.0, 16.0),
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(48, Some(1000000), 24.0, 20.0), // passes auto connection check
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(49, Some(1000000), 28.0, 16.0), // passes auto connection check
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(50, Some(1000000), 28.0, 20.0), // passes auto connection check
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// // (51, Some(1000000), 32.0, 16.0), // FAILS auto connection check
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].iter().copied() {
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run_sim(i, Params {
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feat_size: 40e-6f32,
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buffer_xy: 160e-6,
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buffer_z: 160e-6,
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boundary_xy: 320e-6,
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boundary_z: 320e-6,
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ferro_major: 1360e-6,
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ferro_minor: 60e-6,
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ferro_buffer: 1320e-6,
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wire_minor: 40e-6,
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wire_wrap_minor: 50e-6,
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wire_set_major: 200e-6,
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wire_wrap_dilation: 50e-6,
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wire_wrap_iters: 3,
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wraps1,
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wraps2,
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wire_conductivity: 5e6f32,
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peak_set_current: 60.0,
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peak_clock_current: 400.0,
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set_duration: 0e-9,
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clock_duration: 25e-9,
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pre_time: 1e-9,
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post_time: 275e-9,
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dump_frames,
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});
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}
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}
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