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Questions - openacc

GNU FORTRAN OpenACC Accessing an allocatable member of a derived type on device

I need to access an allocatable member of a derived type on device. I found a good solution here. However, it uses a PGI compiler. I could not figure out how to install that compiler with all the lice...
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DKS

gcc

gnu

gfortran

openacc

Votes: 0

Answers: 2

Latest Answer

The problem is that you need to do a deep copy of "c%arr". By default, the copy clauses perform a shallow copy. Hence with "copy(c)", it's copying the host address of "arr&q...
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Mat Colgrove

How to read data using GPU with an OpenACC Fortran code?

I am trying to upgrade some legacy f77 codes to analyse molecular dynamics trajectories. I have had some success with modern fortran with OpenACC directives. My aim now is to read the LAMMPS trajector...
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Gyrtle

fortran

gfortran

openacc

lammps

Votes: 0

Answers: 0

OpenACC: How to force copy data from host to device even if already present?

I am trying to build some time metrics for an OpenACC code. One of the most time consuming tasks is copying a big array from the host to the device. I am running the same code multiple times in order ...
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Belen

c++

gpu

openacc

Votes: 0

Answers: 1

Latest Answer

Assuming that these variables are not in another data region, they wouldn't be present so would be copied. But if you want to be sure, you can use "create" in the data region and then use t...
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Mat Colgrove

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