Dear OPM community, We are currently in the process of merging and integrating a version of the flow simulator that uses a more cache-friendly and significantly better performing approach to assembling the residuals and Jacobians than the existing one. It has been prototyped for some time in the "frankenstein" branch of the opm-simulators module as some of you have doubtlessly noticed, and it is time to merge that branch into master soon.
Since this is merge constitutes a potentially disrupting change, we would like to inform the wider OPM community about our plans of how to proceed. That plan is currently as follows: 1. (already done) Renaming of the flow binary to flow_legacy, and make flow a symbolic link pointing from flow to flow_legacy. 2. November 18. Merging the "frankenstein" branch into the opm-simulators master branch. This introduces a new simulator called "flow_ebos" and makes the opm-simulators module depend on the eWoms module. 3. November 18 - December 9. Testing of flow_ebos to make sure it can completely replace flow_legacy, running all the same cases etc. 4. When all tests are successful, the "flow" symbolic link will be changed to point to "flow_ebos". 5. By January 2017. Testing should ensure that MPI runs correctly with flow_ebos (at this point called just called "flow"), so we will remove the separate mpi applications. 6. By March 2017. A solvent simulator based on new flow should be ready to replace the current flow_solvent. 7. By April 2017. A polymer simulator based on new flow should be ready to replace the current flow_polymer. Thus we hope that we will have faster simulators of all required variants in time for the 2017.04 release. Kind Regards Andreas (writing on behalf the OPM core developers)
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