Matthb2: Created page with "OpenACC is is a compiler extension which allows you to annotate your code such that the compiler can generate GPU accelerated binaries. The PGI compiler available on the viz node..."

2013-07-15T21:22:08Z

Created page with "OpenACC is is a compiler extension which allows you to annotate your code such that the compiler can generate GPU accelerated binaries. The PGI compiler available on the viz node..."

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OpenACC is is a compiler extension which allows you to annotate your code such that the compiler can generate GPU accelerated binaries. The PGI compiler available on the viz nodes supports OpenACC and can generate code for the viz node's GPUs.

== Use ==

Currently, CUDA requires <= gcc 4.6, so you'll need to

soft add +gcc-4.6
soft add +pgi-64bit

Then you can compile your annotated code

pgfortran -acc -Minfo=acc -o gputest test.f
pgfortran -O3 -o cputest test.f
time ./gputest
time ./cputest

OpenACC - Revision history

Matthb2: Created page with "OpenACC is is a compiler extension which allows you to annotate your code such that the compiler can generate GPU accelerated binaries. The PGI compiler available on the viz node..."