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Why is Patran taking forever to attach my op2 file?

toby.t.norris
I just did a fresh install of Patran 2017. I am running a 3e6 dof line sol101 model that runs in 8 minutes and produces an op2 file that is 5.9GB in size. It takes over 2 hours to attache the op2 in Patran. Once attached then I can do my post processing. Then if I exit from Patran and then start patran again with the same attached file I have to wait another 2 hours for the first fringe plot. Please give me a clue how to fix this. This makes Patran 2017 unusable. I do not recall having this type of problem with Patran 2014. I have 64GB of RAM and I think I have default settings for Patran and Nastran.
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    Please don't tell me to just use the new H5 format. I did try that and yes it does work much better with attach time of less than a minute. However, for some reason the h5 format does not include the load case name for my many subcases. I just have SC01, SC02, etc. I need all those subcase names because the subcase name shows up on the plots and without the subcase name coming in on the h5 file I am forced to try and rename all my subcases manually in Patran or via PCL. As you can imagine this is a nightmare if you have hundreds of subcases. The op2 format does include the subcase names and so that is why I need it.
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  • 0
    Please don't tell me to just use the new H5 format. I did try that and yes it does work much better with attach time of less than a minute. However, for some reason the h5 format does not include the load case name for my many subcases. I just have SC01, SC02, etc. I need all those subcase names because the subcase name shows up on the plots and without the subcase name coming in on the h5 file I am forced to try and rename all my subcases manually in Patran or via PCL. As you can imagine this is a nightmare if you have hundreds of subcases. The op2 format does include the subcase names and so that is why I need it.
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