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<TITLE>RE: [petsc-users] Providing matrix vector product yourself for matrix free in SNES</TITLE>
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<P><FONT SIZE=2>> You need to pass a valid address. Show us what this code looks like. It<BR>
> should be something like<BR>
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> MyContext *ptr;<BR>
> MatShellGetContext(mat,&ptr);<BR>
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That's it. I just sent ptr not &ptr. It is working now.<BR>
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Thanks,<BR>
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Edwin</FONT>
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