co-issue global mem requests

1 files changed, 9 insertions, 0 deletions

diff --git a/src/gpgpu-sim/gpu-sim.cc b/src/gpgpu-sim/gpu-sim.cc
index cd38857..ca51c50 100644
--- a/src/gpgpu-sim/gpu-sim.cc
+++ b/src/gpgpu-sim/gpu-sim.cc
@@ -711,6 +711,15 @@ void shader_core_config::reg_options(class OptionParser *opp) {
       "the `gpu_tot_inter_warp_coissue` / `gpu_tot_intra_warp_coissue` "
       "stats; only turn this on for quick_tests that grep the raw lines.",
       "0");
+  option_parser_register(
+      opp, "-gpgpu_mem_coissue", OPT_BOOL, &gpgpu_mem_coissue,
+      "Enable MEM/LDST co-issue under SIMD lane partitioning. When 0 "
+      "(default), MEM primaries do not participate in co-issue (bit-parity "
+      "with pre-MEM-coissue tree). When 1, global/local-space loads and "
+      "stores from different warps or different splits of the same warp "
+      "may share the LDST unit in one pipe slot; atomics, shared, tex, "
+      "const, barriers, LDGSTS, and BRU spill/fill are still excluded.",
+      "0");
 
   for (unsigned j = 0; j < SPECIALIZED_UNIT_NUM; ++j) {
     std::stringstream ss;