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"thread" is confusing, unify to lane when denoting a hardware SIMD lane
inside a single warp.
This commit is contained in:
Hansung Kim
2023-03-09 22:09:07 -08:00
parent a495149869
commit 9bfb813e1b
4 changed files with 78 additions and 65 deletions
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16
src/main/resources/csrc/SimMemTrace.cc
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@@ -35,7 +35,7 @@ void MemTraceReader::parse() {
printf("MemTraceReader: started parsing\n");
while (infile >> line.cycle >> line.loadstore >> line.core_id >>
line.thread_id >> std::hex >> line.address >> line.data >> std::dec >>
line.lane_id >> std::hex >> line.address >> line.data >> std::dec >>
line.data_size) {
line.valid = true;
trace.push_back(line);
@@ -49,7 +49,7 @@ void MemTraceReader::parse() {
// given SIMD lane (= "thread"). In case no request happened at that point,
// return an empty line with .valid = false.
MemTraceLine MemTraceReader::read_trace_at(const long cycle,
const int thread_id) {
const int lane_id) {
MemTraceLine line;
line.valid = false;
@@ -67,17 +67,17 @@ MemTraceLine MemTraceReader::read_trace_at(const long cycle,
assert(false && "some trace lines are left unread in the past");
}
if (line.thread_id != thread_id) {
if (line.lane_id != lane_id) {
line.valid = false;
}
if (line.cycle > cycle) {
// We haven't reached the cycle mark specified in this line yet, so we don't
// read it right now.
return MemTraceLine{};
} else if (line.cycle == cycle && line.thread_id == thread_id) {
} else if (line.cycle == cycle && line.lane_id == lane_id) {
printf("fire! cycle=%ld, valid=%d, %s \n", cycle, line.valid, line.loadstore);
// FIXME! Currently thread_id is assumed to be in round-robin order, e.g.
// FIXME! Currently lane_id is assumed to be in round-robin order, e.g.
// 0->1->2->3->0->..., both in the trace file and the order the caller calls
// this function. If this is not true, we cannot simply monotonically
// increment read_pos.
@@ -101,7 +101,7 @@ extern "C" void memtrace_init(const char *filename) {
// TODO: accept core_id as well
extern "C" void memtrace_query(unsigned char trace_read_ready,
unsigned long trace_read_cycle,
int trace_read_thread_id,
int trace_read_lane_id,
unsigned char *trace_read_valid,
unsigned long *trace_read_address,
unsigned char *trace_read_is_store,
@@ -109,13 +109,13 @@ extern "C" void memtrace_query(unsigned char trace_read_ready,
unsigned long *trace_read_data,
unsigned char *trace_read_finished) {
// printf("memtrace_query(cycle=%ld, tid=%d)\n", trace_read_cycle,
// trace_read_thread_id);
// trace_read_lane_id);
if (!trace_read_ready) {
return;
}
auto line = reader->read_trace_at(trace_read_cycle, trace_read_thread_id);
auto line = reader->read_trace_at(trace_read_cycle, trace_read_lane_id);
*trace_read_valid = line.valid;
*trace_read_address = line.address;
*trace_read_is_store = strcmp(line.loadstore, "STORE") == 0 ;