co-issue global mem requests

1 files changed, 6 insertions, 1 deletions

diff --git a/src/gpgpu-sim/mem_fetch.cc b/src/gpgpu-sim/mem_fetch.cc
index 809c920..e171d9e 100644
--- a/src/gpgpu-sim/mem_fetch.cc
+++ b/src/gpgpu-sim/mem_fetch.cc
@@ -46,7 +46,12 @@ mem_fetch::mem_fetch(const mem_access_t &access, const warp_inst_t *inst,
   m_access = access;
   if (inst) {
     m_inst = *inst;
-    assert(wid == m_inst.warp_id());
+    // Sanity: the stamped wid matches the inst's warp_id, UNLESS this is a
+    // MEM co-issue transaction where the access carries an override source
+    // warp_id. In that case m_inst is a copy of the composite (whose
+    // warp_id is the primary) but wid is the originating warp.
+    assert(wid == m_inst.warp_id() ||
+           access.get_source_wid() != (unsigned)-1);
   }
   m_streamID = streamID;
   m_data_size = access.get_size();