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Question: Maple's Usage vs GNU time for Memory usage

Question:Maple's Usage vs GNU time for Memory usage

grad_stu 50 Maple 2020
memory usage codetools
January 05 2021
1

I am using Maple's CodeTools[Usage] to check memory measurement for a few lines of code i have.

One line is calling a custom function and the usage reports ~16 GB usage, the other line is a Groebner Basis computation and reports ~200 MB of memory usage. The usage is reported via 'bytesused' flag in the CodeTools[Usage] input.

However, GNU time command returns 6 GB total for the whole code iteration. Why is there such a discrepancy? Does maple's bytesused mean something different than GNU time's max resident set size?
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