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Latest activity by RALPH ASHER
  • RALPH ASHER commented,

    Yes, I realized after reading your comment (and some Googling) that I had not enabled hyperthreading in BIOS.  Once I did, Gurobi now defaults to using 8 physical cores, 16 logical processors, and ...

  • RALPH ASHER created a post,

    Using multithreaded cores?


    I have a 18-core, 36 thread CPU (https://www.intel.com/content/www/us/en/products/sku/81061/intel-xeon-processor-e52699-v3-45m-cache-2-30-ghz/specifications.html ) and am restricting Windows to boo...

  • RALPH ASHER commented,

    Thank you Maliheh.  I'm running it now with Presolve=2, PreSparsify=1, Symmetry = 2,NoRelHeurTime=700,Cuts=0,Heuristics=0.3 in the parameters.  Aggressive Presolve took much longer, but it's explor...

  • RALPH ASHER created a post,

    Large MIP Model Stops Progressing - Many Equivalent Solutions?


    I have a MIP model for a manufacturing plant production optimization.  The objective function is to maximize production (in pounds of product) out of the plant, limited by a demand input per modele...