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fixed wspawn's warp synchronization

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This commit is contained in:
Blaise Tine
2021-08-15 05:12:27 -07:00
parent a60bfc5e01
commit bc3fa0bb23
5 changed files with 46 additions and 6 deletions
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32
tests/runtime/simple/tests.cpp
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@@ -98,7 +98,7 @@ int test_tmc() {
int wspawn_buffer[8];
void simple_kernel() {
void wspawn_kernel() {
unsigned wid = vx_warp_id();
wspawn_buffer[wid] = 65 + wid;
vx_tmc(0 == wid);
@@ -107,8 +107,8 @@ void simple_kernel() {
int test_wsapwn() {
vx_printf("Wspawn Test\n");
int num_warps = std::min(vx_num_warps(), 8);
vx_wspawn(num_warps, simple_kernel);
simple_kernel();
vx_wspawn(num_warps, wspawn_kernel);
wspawn_kernel();
return check_error(wspawn_buffer, num_warps);
}
@@ -216,4 +216,30 @@ l_start:
vx_tmc(1);
return check_error(tmask_buffer, num_threads);
}
///////////////////////////////////////////////////////////////////////////////
int barrier_buffer[8];
volatile int barrier_ctr;
volatile int barrier_stall;
void barrier_kernel() {
unsigned wid = vx_warp_id();
for (int i = 0; i <= (wid * 256); ++i) {
++barrier_stall;
}
barrier_buffer[wid] = 65 + wid;
vx_barrier(0, barrier_ctr);
vx_tmc(0 == wid);
}
int test_barrier() {
vx_printf("Barrier Test\n");
int num_warps = std::min(vx_num_warps(), 8);
barrier_ctr = num_warps;
barrier_stall = 0;
vx_wspawn(num_warps, barrier_kernel);
barrier_kernel();
return check_error(barrier_buffer, num_warps);
}