Hello Sushma, My best guess for why you're seeing this error message is that somehow PSHM support is missing from your build, but I don't see why that would be the case. In addition to the version outputs requested by Rob, please also provide the output of the following commands: /home/sushma/hipmer/gcc/new/berkeley_upc-2022.5.0/build/install/bin/upcrun -i /home/sushma/hipmer/gcc/new/HipMer-1.2.3/build/bin/main-32 /home/sushma/hipmer/gcc/new/berkeley_upc-2022.5.0/build/install/bin/upcxx-run -i /home/sushma/hipmer/gcc/new/HipMer-1.2.3/build/bin/main-32...
There is now a new version of clang-upc2c available at https://clangupc.github.io/clang-upc2c/ that builds with newer versions of GCC and Clang
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