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i#6262: query cpu id for scheduler output streams #6263

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i#6262: query cpu id for scheduler output streams #6263

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9bfde8b
i#6262: query cpu id for scheduler output streams
prasun3 Aug 11, 2023
9b814f8
i#6262: fixed format string
prasun3 Aug 11, 2023
35407f8
i#6262: fixed type error
prasun3 Aug 11, 2023
9d31cef
Merge branch 'master' into i6262-query-cpu-id-for-scheduler-output-st…
ivankyluk Aug 17, 2023
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3 changes: 3 additions & 0 deletions clients/drcachesim/scheduler/scheduler.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -830,6 +830,7 @@ scheduler_tmpl_t<RecordType, ReaderType>::read_traced_schedule()
// We also need to translate the thread and cpu id values into 0-based ordinals.
std::unordered_map<memref_tid_t, input_ordinal_t> tid2input;
for (int i = 0; i < static_cast<input_ordinal_t>(inputs_.size()); ++i) {
VPRINT(this, 1, "tid2input: tid: %" PRId64 " -> %d\n", inputs_[i].tid, i);
tid2input[inputs_[i].tid] = i;
}
std::vector<std::set<uint64_t>> start2stop(inputs_.size());
Expand Down Expand Up @@ -857,6 +858,8 @@ scheduler_tmpl_t<RecordType, ReaderType>::read_traced_schedule()
}
}
cur_cpu = entry.cpu;
VPRINT(this, 1, "Output #%d is CPU #%" PRId64 "\n", cur_output, cur_cpu);
outputs_[cur_output].cpu = (int)cur_cpu;
}
input_ordinal_t input = tid2input[entry.thread];
// We'll fill in the stop ordinal in our second pass below.
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13 changes: 13 additions & 0 deletions clients/drcachesim/scheduler/scheduler.h
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Expand Up @@ -790,6 +790,18 @@ template <typename RecordType, typename ReaderType> class scheduler_tmpl_t {
return &outputs_[ordinal].stream;
}

/**
* Returns the cpu number for the 'ordinal'-th output stream. This is only valid for
* MAP_TO_RECORDED_OUTPUT and returns -1 for other mappings.
*/
virtual int
get_output_cpuid(output_ordinal_t ordinal)
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We figured this would be on the stream, not the scheduler. We may also want this for other modes, including core-oriented analysis tool modes #5694, where it has to be on the stream as the scheduler is not exposed through the analyzer framework.

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I ended up needing this for #5694 and I put it into PR #6279 -- does that meet your needs as well?

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Thanks! Looks like this should be good.

{
if (ordinal < 0 || ordinal >= static_cast<output_ordinal_t>(outputs_.size()))
return -1;
return outputs_[ordinal].cpu;
}

/** Returns the number of input streams. */
virtual int
get_input_stream_count() const
Expand Down Expand Up @@ -976,6 +988,7 @@ template <typename RecordType, typename ReaderType> class scheduler_tmpl_t {
// sched_lock_.
std::vector<schedule_record_t> record;
int record_index = 0;
int cpu = -1;
bool waiting = false;
bool active = true;
// Used for time-based quanta.
Expand Down
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