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Found the coremark performance issue. The testbench was continuously forcing the BTB to all zeros. Once fixed it resolved the performance problem.

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This commit is contained in:
Ross Thompson 2023-06-05 15:42:05 -05:00
parent 21a73e0e43
commit 822e60bd3d
2 changed files with 2 additions and 2 deletions
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testbench/testbench.sv
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@ -554,7 +554,7 @@ module testbench;
always @(*) begin always @(*) begin
if(reset) begin if(reset) begin
for(adrindex = 0; adrindex < 2**`BTB_SIZE; adrindex++) begin for(adrindex = 0; adrindex < 2**`BTB_SIZE; adrindex++) begin
force dut.core.ifu.bpred.bpred.TargetPredictor.memory.mem[adrindex] = 0; dut.core.ifu.bpred.bpred.TargetPredictor.memory.mem[adrindex] = 0;
end end
for(adrindex = 0; adrindex < 2**`BPRED_SIZE; adrindex++) begin for(adrindex = 0; adrindex < 2**`BPRED_SIZE; adrindex++) begin
dut.core.ifu.bpred.bpred.Predictor.DirPredictor.PHT.mem[adrindex] = 0; dut.core.ifu.bpred.bpred.Predictor.DirPredictor.PHT.mem[adrindex] = 0;