From 1dca8d8cfa672bc71fffcf630d29f8f8f099dfb7 Mon Sep 17 00:00:00 2001
From: biondizzle <biondizzle@gmail.com>
Date: Sat, 30 May 2026 04:46:11 +0000
Subject: [PATCH] debug: unbuffered stdout

---
 tests/unit/test_fmha_6warp_tma_multirow_multitile.cu | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/unit/test_fmha_6warp_tma_multirow_multitile.cu b/tests/unit/test_fmha_6warp_tma_multirow_multitile.cu
index ee97af41..20b6a6ec 100644
--- a/tests/unit/test_fmha_6warp_tma_multirow_multitile.cu
+++ b/tests/unit/test_fmha_6warp_tma_multirow_multitile.cu
@@ -153,6 +153,7 @@ static int test_single(int T, int s_k, int n_h = 1, int batch = 1) {
     dim3 grid(1, n_h, batch);
     printf("  Launching kernel: grid=(%d,%d,%d) smem=%zu\n", grid.x, grid.y, grid.z, smem); fflush(stdout);
     fmha_6warp_tma_multirow_multitile_kernel<HD><<<grid, 192, smem>>>(params);
+    printf("  Kernel launched.\n");
 
     cudaError_t lerr = cudaGetLastError();
     if (lerr != cudaSuccess) {
@@ -200,8 +201,8 @@ static int test_single(int T, int s_k, int n_h = 1, int batch = 1) {
 }
 
 int main() {
+    setbuf(stdout, NULL);
     printf("START: test_fmha_6warp_tma_multirow_multitile HD=%d\n", HD);
-    fflush(stdout);
     int total_fail = 0;
 
     // Just the most basic test first