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AlexandreSingerAlexandreSinger
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Merge pull request #2746 from AlexandreSinger/feature-ap-flow-upstreaming
[AP] Added AP Flow to VPR
2 parents b9760a9 + 7219c18 commit 13f37a6

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17 files changed

+187
-11
lines changed

17 files changed

+187
-11
lines changed

‎doc/src/arch/reference.rst‎

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@@ -158,6 +158,8 @@ The valid tags within the ``<layout>`` tag are:
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.. note:: At most one ``<auto_layout>`` can be specified.
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.. _fixed_arch_grid_layout:
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.. arch:tag:: <fixed_layout name="string" width="int" height="int">
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:req_param name:

‎doc/src/vpr/command_line_usage.rst‎

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@@ -82,6 +82,23 @@ VPR runs all stages of (pack, place, route, and analysis) if none of :option:`--
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**Default:** ``off``
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.. option:: --analytical_place
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Run the analytical placement flow.
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This flows uses an integrated packing and placement algorithm which uses information from the primitive level to improve clustering and placement;
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as such, the :option:`--pack` and :option:`--place` options should not be set when this option is set.
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This flow requires that the device has a fixed size and some of the primitive blocks are fixed somewhere on the device grid.
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.. seealso:: See :ref:`Fixed FPGA Grid Layout <fixed_arch_grid_layout>` and :option:`--device` for how to fix the device size.
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.. seealso:: See :ref:`VPR Placement Constraints <placement_constraints>` for how to fix primitive blocks in a design to the device grid.
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.. warning::
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This analytical placement flow is experimental and under active development.
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**Default:** ``off``
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.. option:: --route
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Run routing stage

‎libs/libvtrutil/src/vpr_error.h‎

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@@ -14,14 +14,15 @@ enum e_vpr_error {
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VPR_ERROR_ARCH,
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VPR_ERROR_PACK,
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VPR_ERROR_PLACE,
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VPR_ERROR_AP,
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VPR_ERROR_ROUTE,
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VPR_ERROR_TIMING,
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VPR_ERROR_POWER,
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VPR_ERROR_SDC,
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// File parsing errors
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VPR_ERROR_NET_F, // Error while parsing the packed netlist file
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VPR_ERROR_PLACE_F, // Error while parsning the placement file
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VPR_ERROR_PLACE_F, // Error while parsing the placement file
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VPR_ERROR_BLIF_F, // Error while parsing the blif file
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VPR_ERROR_IC_NETLIST_F, // Error while parsing the interchange netlist file
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‎utils/fasm/src/main.cpp‎

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@@ -72,11 +72,12 @@ int main(int argc, const char **argv) {
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/* Read options, architecture, and circuit netlist */
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vpr_init(argc, argv, &Options, &vpr_setup, &Arch);
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vpr_setup.PackerOpts.doPacking = STAGE_LOAD;
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vpr_setup.PlacerOpts.doPlacement = STAGE_LOAD;
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vpr_setup.RouterOpts.doRouting = STAGE_LOAD;
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vpr_setup.PackerOpts.doPacking = STAGE_LOAD;
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vpr_setup.PlacerOpts.doPlacement = STAGE_LOAD;
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vpr_setup.APOpts.doAP = STAGE_SKIP;
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vpr_setup.RouterOpts.doRouting = STAGE_LOAD;
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vpr_setup.RouterOpts.read_rr_edge_metadata = true;
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vpr_setup.AnalysisOpts.doAnalysis = STAGE_SKIP;
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vpr_setup.AnalysisOpts.doAnalysis = STAGE_SKIP;
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bool flow_succeeded = false;
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flow_succeeded = vpr_flow(vpr_setup, Arch);

‎utils/fasm/test/test_fasm.cpp‎

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@@ -315,11 +315,12 @@ TEST_CASE("fasm_integration_test", "[fasm]") {
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vpr_init(sizeof(argv)/sizeof(argv[0]), argv,
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&options, &vpr_setup, &arch);
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vpr_setup.PackerOpts.doPacking = STAGE_LOAD;
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vpr_setup.PlacerOpts.doPlacement = STAGE_LOAD;
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vpr_setup.RouterOpts.doRouting = STAGE_LOAD;
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vpr_setup.PackerOpts.doPacking = STAGE_LOAD;
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vpr_setup.PlacerOpts.doPlacement = STAGE_LOAD;
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vpr_setup.APOpts.doAP = STAGE_SKIP;
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vpr_setup.RouterOpts.doRouting = STAGE_LOAD;
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vpr_setup.RouterOpts.read_rr_edge_metadata = true;
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vpr_setup.AnalysisOpts.doAnalysis = STAGE_SKIP;
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vpr_setup.AnalysisOpts.doAnalysis = STAGE_SKIP;
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bool flow_succeeded = vpr_flow(vpr_setup, arch);
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REQUIRE(flow_succeeded == true);

‎vpr/src/analytical_place/analytical_placement_flow.cpp‎

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/**
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* @file
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* @author Alex Singer
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* @date September 2024
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* @brief Implementation of the Analytical Placement flow.
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*/
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#include "analytical_placement_flow.h"
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#include "atom_netlist.h"
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#include "globals.h"
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#include "prepack.h"
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#include "vpr_context.h"
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#include "vpr_error.h"
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#include "vpr_types.h"
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#include "vtr_time.h"
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void run_analytical_placement_flow(t_vpr_setup& vpr_setup) {
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(void)vpr_setup;
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// Start an overall timer for the Analytical Placement flow.
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vtr::ScopedStartFinishTimer timer("Analytical Placement Flow");
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// The global state used/modified by this flow.
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const AtomNetlist& atom_nlist = g_vpr_ctx.atom().nlist;
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const DeviceContext& device_ctx = g_vpr_ctx.device();
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// Run the prepacker
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Prepacker prepacker;
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prepacker.init(atom_nlist, device_ctx.logical_block_types);
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// AP is currently under-construction. Fail gracefully just in case this
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// is somehow being called.
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VPR_FATAL_ERROR(VPR_ERROR_AP,
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"Analytical Placement flow not implemented yet");
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}
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‎vpr/src/analytical_place/analytical_placement_flow.h‎

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/**
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* @file
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* @author Alex Singer
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* @date September 2024
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* @brief Methods for running the Analytical Placement flow.
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*/
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#pragma once
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// Forward declarations
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struct t_vpr_setup;
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/**
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* @brief Run the Analaytical Placement flow.
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*
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* @param vpr_setup The setup options provided by the user.
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*/
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void run_analytical_placement_flow(t_vpr_setup& vpr_setup);
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‎vpr/src/base/CheckSetup.cpp‎

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@@ -9,6 +9,7 @@
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void CheckSetup(const t_packer_opts& PackerOpts,
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const t_placer_opts& PlacerOpts,
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const t_ap_opts& APOpts,
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const t_router_opts& RouterOpts,
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const t_server_opts& ServerOpts,
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const t_det_routing_arch& RoutingArch,
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NUM_PL_MOVE_TYPES);
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}
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// Rules for doing Analytical Placement
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if (APOpts.doAP) {
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// Make sure that the --place option was not set.
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if (PlacerOpts.doPlacement) {
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VPR_FATAL_ERROR(VPR_ERROR_OTHER,
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"Cannot perform both analytical and non-analytical placement.\n");
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}
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// Make sure that the --pack option was not set.
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if (PackerOpts.doPacking) {
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VPR_FATAL_ERROR(VPR_ERROR_OTHER,
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"Analytical placement should skip packing.\n");
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}
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// TODO: Should check that read_vpr_constraint_file is non-empty or
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// check within analytical placement that the floorplanning has
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// some fixed blocks somewhere. Maybe we can live without fixed
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// blocks.
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// TODO: Should we enforce that the size of the device is fixed. This
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// goes with ensuring that some blocks are fixed.
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}
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if (RouterOpts.doRouting) {
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if (!Timing.timing_analysis_enabled
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&& (DEMAND_ONLY != RouterOpts.base_cost_type && DEMAND_ONLY_NORMALIZED_LENGTH != RouterOpts.base_cost_type)) {

‎vpr/src/base/CheckSetup.h‎

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@@ -7,6 +7,7 @@ const int DYNAMIC_PORT_RANGE_MAX = 65535;
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void CheckSetup(const t_packer_opts& PackerOpts,
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const t_placer_opts& PlacerOpts,
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const t_ap_opts& APOpts,
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const t_router_opts& RouterOpts,
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const t_server_opts& ServerOpts,
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const t_det_routing_arch& RoutingArch,

‎vpr/src/base/SetupVPR.cpp‎

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@@ -97,6 +97,7 @@ void SetupVPR(const t_options* Options,
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t_netlist_opts* NetlistOpts,
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t_packer_opts* PackerOpts,
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t_placer_opts* PlacerOpts,
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t_ap_opts* APOpts,
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t_annealing_sched* AnnealSched,
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t_router_opts* RouterOpts,
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t_analysis_opts* AnalysisOpts,
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if (!Options->do_packing
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&& !Options->do_legalize
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&& !Options->do_placement
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&& !Options->do_analytical_placement
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&& !Options->do_routing
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&& !Options->do_analysis) {
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//run all stages if none specified
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PackerOpts->doPacking = STAGE_DO;
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PlacerOpts->doPlacement = STAGE_DO;
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APOpts->doAP = STAGE_SKIP; // AP not default.
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RouterOpts->doRouting = STAGE_DO;
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AnalysisOpts->doAnalysis = STAGE_AUTO; //Deferred until implementation status known
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} else {
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PlacerOpts->doPlacement = STAGE_DO;
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}
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if (Options->do_analytical_placement) {
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// In the Analytical Placement flow, packing and placement are
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// integrated. Thus, these stages are skipped.
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PackerOpts->doPacking = STAGE_SKIP;
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PlacerOpts->doPlacement = STAGE_SKIP;
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APOpts->doAP = STAGE_DO;
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}
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if (Options->do_packing) {
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PackerOpts->doPacking = STAGE_DO;
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}

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