markdown/gh_discussions/Bug/3362.md

Where does "Error: tdms_place.tcl, 35 cannot create std::vector larger than max_size()"

Tool: Global Placement

Subcategory: Memory allocation error

Conversation

oharboe

I want to debug it, but I searched the code and couldn't find this error message in the source.

[INFO GPL-0003] SiteSize: 54 270
[INFO GPL-0004] CoreAreaLxLy: 2160 2160
[INFO GPL-0005] CoreAreaUxUy: 25922160 25922160
Error: tdms_place.tcl, 35 cannot create std::vector larger than max_size()
Command exited with non-zero status 1

maliberty

My guess is this is an STL exception and not in the OR code. In gdb try 'catch throw' to see when it is being thrown.

oharboe

This is odd... 48000*96000 = 4608000000. Ah. overflow.

D$ git diff
diff --git a/src/gpl/src/placerBase.cpp b/src/gpl/src/placerBase.cpp
index 30ff82771..4f2c10b4e 100644
--- a/src/gpl/src/placerBase.cpp
+++ b/src/gpl/src/placerBase.cpp
@@ -1002,8 +1002,8 @@ void PlacerBase::initInstsForUnusableSites()
 {
   dbSet<dbRow> rows = db_->getChip()->getBlock()->getRows();
 
-  int siteCountX = (die_.coreUx() - die_.coreLx()) / siteSizeX_;
-  int siteCountY = (die_.coreUy() - die_.coreLy()) / siteSizeY_;
+  long siteCountX = (die_.coreUx() - die_.coreLx()) / siteSizeX_;
+  long siteCountY = (die_.coreUy() - die_.coreLy()) / siteSizeY_;
 
   enum PlaceInfo
   {

gives me:

[INFO GPL-0002] DBU: 1000
[INFO GPL-0003] SiteSize: 54 270
[INFO GPL-0004] CoreAreaLxLy: 2160 2160
[INFO GPL-0005] CoreAreaUxUy: 25922160 25922160
Error: out of memory.