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PerfCnt: count and sum for each DiffState when Batch #560

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Feb 5, 2025
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PerfCnt: count and sum for each DiffState when Batch #560

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21 changes: 17 additions & 4 deletions src/main/scala/DPIC.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -211,8 +211,14 @@ class DPICBatch(template: Seq[DifftestBundle], batchIO: BatchIO, config: Gateway
override def dpicFuncAssigns: Seq[String] = {
val bundleEnum = template.map(_.desiredModuleName.replace("Difftest", "")) ++ Seq("BatchInterval", "BatchFinish")
val bundleAssign = template.zipWithIndex.map { case (t, idx) =>
val bundleName = bundleEnum(idx)
val perfName = "perf_Batch_" + bundleName
s"""
| else if (id == ${bundleEnum(idx)}) {
| else if (id == $bundleName) {
|#ifdef CONFIG_DIFFTEST_PERFCNT
| dpic_calls[$perfName] += num;
| dpic_bytes[$perfName] += num * ${t.getByteAlignWidth / 8};
|#endif // CONFIG_DIFFTEST_PERFCNT
| for (int j = 0; j < num; j++) {
| ${getDPICBundleUnpack(t)}
| }
Expand Down Expand Up @@ -296,13 +302,15 @@ private class DummyDPICBatchWrapper(

object DPIC {
val interfaces = ListBuffer.empty[(String, String, String)]
private val perfs = ListBuffer.empty[String]

def apply(control: GatewaySinkControl, io: Valid[DifftestBundle], config: GatewayConfig): Unit = {
val module = Module(new DummyDPICWrapper(chiselTypeOf(io), config))
module.control := control
module.io := io
val dpic = module.dpic
if (!interfaces.map(_._1).contains(dpic.dpicFuncName)) {
perfs += dpic.dpicFuncName
val interface = (dpic.dpicFuncName, dpic.dpicFuncProto, dpic.dpicFunc)
interfaces += interface
}
Expand All @@ -314,6 +322,8 @@ object DPIC {
module.io := io
val dpic = module.dpic
interfaces += ((dpic.dpicFuncName, dpic.dpicFuncProto, dpic.dpicFunc))
perfs += dpic.dpicFuncName
perfs ++= template.map("Batch_" + _.desiredModuleName.replace("Difftest", ""))
}

def collect(): GatewayResult = {
Expand Down Expand Up @@ -368,7 +378,7 @@ object DPIC {
s"""
|#ifdef CONFIG_DIFFTEST_PERFCNT
|enum DIFFSTATE_PERF {
| ${(interfaces.map("perf_" + _._1) ++ Seq("DIFFSTATE_PERF_NUM")).mkString(",\n ")}
| ${(perfs.toSeq.map("perf_" + _) ++ Seq("DIFFSTATE_PERF_NUM")).mkString(",\n ")}
|};
|long long dpic_calls[DIFFSTATE_PERF_NUM] = {0}, dpic_bytes[DIFFSTATE_PERF_NUM] = {0};
|#endif // CONFIG_DIFFTEST_PERFCNT
Expand Down Expand Up @@ -405,6 +415,7 @@ object DPIC {
| diffstate_buffer = nullptr;
|}
""".stripMargin
val diffstate_perfhead = if (perfs.head.contains("Batch")) 1 else 0
interfaceCpp +=
s"""
|#ifdef CONFIG_DIFFTEST_PERFCNT
Expand All @@ -417,12 +428,14 @@ object DPIC {
|void diffstate_perfcnt_finish(long long msec) {
| long long calls_sum = 0, bytes_sum = 0;
| const char *dpic_name[DIFFSTATE_PERF_NUM] = {
| ${interfaces.map("\"" + _._1 + "\"").mkString(",\n ")}
| ${perfs.map("\"" + _ + "\"").mkString(",\n ")}
| };
| for (int i = 0; i < DIFFSTATE_PERF_NUM; i++) {
| difftest_perfcnt_print(dpic_name[i], dpic_calls[i], dpic_bytes[i], msec);
| }
| for (int i = ${diffstate_perfhead}; i < DIFFSTATE_PERF_NUM; i++) {
| calls_sum += dpic_calls[i];
| bytes_sum += dpic_bytes[i];
| difftest_perfcnt_print(dpic_name[i], dpic_calls[i], dpic_bytes[i], msec);
| }
| difftest_perfcnt_print(\"DIFFSTATE_SUM\", calls_sum, bytes_sum, msec);
|}
Expand Down