The small test case of ramses is a debugging case that runs in less than 10 minutes on 256 or 128 cores so a few nodes. It uses the initial conditions IC_l9. To allow debugging on a variable number of cores, we start from a non-evolved initial condition (IC_l9) and therefore not necessarily representative of a real case, so no problem on this test case to change the number of cores and nodes.
For this simulation, we start from a **non-evolved initial condition** (called IC_l9) and therefore not really representative of a real case.
The small test case (A.K.A Debug test case) of ramses is a **debugging case** that runs in **less than 10 minutes** on **256 cores**.
In this version the code allocates 2.6GB/core. We can reduce it to a little less than 2GB/core if needed, for that we have to reduce "ngridmax" in the cosmo.nml namelist to 300000 instead of 400000 and npartmax to 1700000 instead of 2000000.
Debbuging:
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To allow debugging on a variable number of cores, we lauch the simulation from a non-evolved system. So, if you need to perform a function/debug test, you can use this test case to change the number of cores and nodes. If necessary, you can reduce the memory footprint, for this we need to reduce "ngridmax" in the name list cosmo.nml to 300000 instead of 400000 and npartmax to 1700000 instead of 2000000 (for example).
Please use 256 MPI and cores in the context of the benchmark.
