Why is code taking so long just to start?
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I have a code that used to run quickly. Now it takes forever just to start doing anything. There seems to be a delay before it gets going. I say this because if I let it spit out intermediate results ones from even the first few lines of the code take a long time to show up in the command window. Possibly related the Run button does not seem to work anymore. If I push Run nothing happens in the command window unless I go to it and hit enter, then busy comes up in the bottom corner. Same symptoms only worse for parallel programming. Specifically there is a long initial delay and then when parfor is encountered it takes an unreasonable amount of time to start my cores. This is all on a Windows 10 machine with an 8-core processor. I usually run pretty complicated cfd code, but I get the same symptoms if I just make a simple nonsense loop.
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Walter Roberson
2017-1-7
编辑：Walter Roberson
2017-1-7
Does the same thing happen if you use the command line? That is, is there a notable delay even for function calls like sin(1) from the command line?
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