https://bugs.llvm.org/show_bug.cgi?id=49764
Bug ID: 49764
Summary: deviceRTL memory footprint increase
Product: OpenMP
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Runtime Library
Assignee: unassignedb...@nondot.org
Reporter: xw111lu...@gmail.com
CC: llvm-bugs@lists.llvm.org
Commit 84e0b14a0a419f26d0a2f7389e06aa8e36569808
increases significantly the memory footprint of deviceRTL.
In my test,
Before
```
Free memory available on default device : 3594 MiB
```
after
```
Free memory available on default device : 3305 MiB
```
my GPU has only 4GB memory. MAX_SM is fixed 6. If MAX_SM is taken as the
default, the absolute memory loss is more significant.
Foot print increase by 57%
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