bugfix: Distribute mulitcompartment reaction fluxes in MPI.#728
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Previously only currents where being gathered by all nodes. In order to avoid double counting rxd currents, the currents generated by rxd are also distributed to all nodes.
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@adamjhn : seems like builds are failing because of IV submodule update. If it's not needed in this PR, you can revert IV to older commit and we can fix IV specific build issues separately. |
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@adamjhn : I didn't change anything. Seems like it was temporary issue on travis which got resolved. |
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In travis CI log I am randomly seeing: I thought we discussed and workaround it in #559 (comment). For now, I am just re-triggering failed build. |
nrnhines
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Dec 9, 2020
* bugfix: Distribute mulitcompartment reaction fluxes in MPI. Previously only currents were being gathered by all nodes. In order to avoid double counting rxd currents, the currents generated by rxd are also distributed to all nodes. * Fixed some initialization problems. * Update test results due to a change in when multicompartment fluxes are added. * Fixed a memory problem in the variable step method. * Fix an initialization problem. * Update test data. * Revert external/iv changes.
nrnhines
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Dec 10, 2020
* bugfix: Distribute mulitcompartment reaction fluxes in MPI. Previously only currents were being gathered by all nodes. In order to avoid double counting rxd currents, the currents generated by rxd are also distributed to all nodes. * Fixed some initialization problems. * Update test results due to a change in when multicompartment fluxes are added. * Fixed a memory problem in the variable step method. * Fix an initialization problem. * Update test data. * Revert external/iv changes.
olupton
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Dec 7, 2022
* Two factors contribute to the above solution:
- New eigen branch (version 3.5 and above). Currently we are
using a mirrored version of Eigen in BlueBrain organisation
https://github.com/BlueBrain/eigen/releases/tag/v3.5-alpha
- An API that makes possible to call any Eigen `__device__`
function from within OpenACC regions.
* More details: Eigen-3.5+ provides better GPU support; however,
some functions cannot be called directly from within OpenACC regions.
Therefore, we need to wrap them in a special API (decorate them with
`__device__` & `acc routine` tokens), which allows us to eventually call
them from OpenACC. Calling these functions from CUDA kernels presents
no issue.
* From #726: Avoid use `[]` operator with eigen Matrix objects. This results
into runtime error with OpenACC and PGI compiler.
* Note that this should works in combination with BlueBrain/CoreNeuron/pull/624
fixes #311
fixes #135
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Previously only currents where being gathered by all nodes. In order to avoid double counting rxd currents, the currents generated by rxd are also distributed to all nodes.