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Add valid / fire / cycles-issued perf counters to dispatch

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This commit is contained in:
Hansung Kim
2024-03-23 00:01:15 -07:00
parent 573be030c8
commit 83e151a189
3 changed files with 36 additions and 1 deletions
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19
hw/rtl/core/VX_dispatch.sv
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@@ -22,6 +22,9 @@ module VX_dispatch import VX_gpu_pkg::*; #(
`ifdef PERF_ENABLE
output wire [`PERF_CTR_BITS-1:0] perf_stalls [`NUM_EX_UNITS],
output wire [`PERF_CTR_BITS-1:0] perf_valids [`NUM_EX_UNITS],
output wire [`PERF_CTR_BITS-1:0] perf_fires [`NUM_EX_UNITS],
output wire [`PERF_CTR_BITS-1:0] perf_any_fire_cycles,
`endif
// inputs
VX_operands_if.slave operands_if [`ISSUE_WIDTH],
@@ -188,6 +191,7 @@ module VX_dispatch import VX_gpu_pkg::*; #(
reg [`NUM_EX_UNITS-1:0][`PERF_CTR_BITS-1:0] perf_stalls_r;
reg [`NUM_EX_UNITS-1:0][`PERF_CTR_BITS-1:0] perf_valids_r;
reg [`NUM_EX_UNITS-1:0][`PERF_CTR_BITS-1:0] perf_fires_r;
reg [`PERF_CTR_BITS-1:0] perf_any_fire_cycles_r;
for (genvar i=0; i < `ISSUE_WIDTH; ++i) begin
always @(*) begin
@@ -232,23 +236,38 @@ module VX_dispatch import VX_gpu_pkg::*; #(
`BUFFER(perf_unit_valids_per_cycle_r, perf_unit_valids_per_cycle);
`BUFFER(perf_unit_fires_per_cycle_r, perf_unit_fires_per_cycle);
reg perf_any_fire;
always @(*) begin
perf_any_fire = 1'b0;
for (integer i = 0; i < `NUM_EX_UNITS; ++i) begin
if (perf_unit_fires_per_cycle_r[i] != '0) begin
perf_any_fire = 1'b1;
end
end
end
for (genvar i = 0; i < `NUM_EX_UNITS; ++i) begin
always @(posedge clk) begin
if (reset) begin
perf_stalls_r[i] <= '0;
perf_valids_r[i] <= '0;
perf_fires_r[i] <= '0;
perf_any_fire_cycles_r <= '0;
end else begin
perf_stalls_r[i] <= perf_stalls_r[i] + `PERF_CTR_BITS'(perf_unit_stalls_per_cycle_r[i]);
perf_valids_r[i] <= perf_valids_r[i] + `PERF_CTR_BITS'(perf_unit_valids_per_cycle_r[i]);
perf_fires_r[i] <= perf_fires_r[i] + `PERF_CTR_BITS'(perf_unit_fires_per_cycle_r[i]);
perf_any_fire_cycles_r <= perf_any_fire_cycles_r + `PERF_CTR_BITS'(perf_any_fire);
end
end
end
for (genvar i=0; i < `NUM_EX_UNITS; ++i) begin
assign perf_stalls[i] = perf_stalls_r[i];
assign perf_valids[i] = perf_valids_r[i];
assign perf_fires[i] = perf_fires_r[i];
end
assign perf_any_fire_cycles = perf_any_fire_cycles_r;
`endif
`ifdef DBG_TRACE_CORE_PIPELINE_VCS

4
hw/rtl/core/VX_issue.sv
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@@ -86,6 +86,10 @@ module VX_issue #(
.reset (dispatch_reset),
`ifdef PERF_ENABLE
`UNUSED_PIN (perf_stalls),
.perf_stalls (perf_issue_if.dispatch_stalls),
.perf_valids (perf_issue_if.dispatch_valids),
.perf_fires (perf_issue_if.dispatch_fires),
.perf_any_fire_cycles (perf_issue_if.dispatch_any_fire_cycles),
`endif
.operands_if (operands_if),
.alu_dispatch_if(alu_dispatch_if),

14
hw/rtl/interfaces/VX_pipeline_perf_if.sv
View File

@@ -21,6 +21,10 @@ interface VX_pipeline_perf_if ();
wire [`PERF_CTR_BITS-1:0] scb_stalls;
wire [`PERF_CTR_BITS-1:0] units_uses [`NUM_EX_UNITS];
wire [`PERF_CTR_BITS-1:0] sfu_uses [`NUM_SFU_UNITS];
wire [`PERF_CTR_BITS-1:0] dispatch_stalls [`NUM_EX_UNITS];
wire [`PERF_CTR_BITS-1:0] dispatch_valids [`NUM_EX_UNITS];
wire [`PERF_CTR_BITS-1:0] dispatch_fires [`NUM_EX_UNITS];
wire [`PERF_CTR_BITS-1:0] dispatch_any_fire_cycles;
wire [`PERF_CTR_BITS-1:0] ifetches;
wire [`PERF_CTR_BITS-1:0] loads;
@@ -38,7 +42,11 @@ interface VX_pipeline_perf_if ();
output ibf_stalls,
output scb_stalls,
output units_uses,
output sfu_uses
output sfu_uses,
output dispatch_stalls,
output dispatch_valids,
output dispatch_fires,
output dispatch_any_fire_cycles
);
modport slave (
@@ -49,6 +57,10 @@ interface VX_pipeline_perf_if ();
input scb_stalls,
input units_uses,
input sfu_uses,
input dispatch_stalls,
input dispatch_valids,
input dispatch_fires,
input dispatch_any_fire_cycles,
input ifetches,
input loads,
input stores,