...\author

Department of Mathematics, University of Kentucky, Lexington, KY 40506.

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Computer Science Division and Mathematics Department, University of California, Berkeley, CA 94720.

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Department of Computer Science, University of Tennessee, Knoxville, TN 37996 and Mathematical Sciences Section, Oak Ridge National Laboratory, Oak Ridge, TN 37831.

...\author

Department of Computer Science, University of Tennessee, Knoxville, TN 37996.

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Department of Mathematics, University of California, Berkeley, CA 94720.

...\author

Computer Science Division, University of California, Berkeley, CA 94720.

...

The BLACS use protocol 2, and the communication pattern most closely resembles the ``shift'' timings.

...

is from Table 8 in[58] and is from Table 5.