Emery Berger

Success stories using Scalene's optimization suggestions

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This thread is meant to document and collect successful optimizations suggested by Scalene (vs. the more general success stories given here: https://github.com/plasma-umass/scalene/issues/58).

Steer suggested optimizations based on profile results

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**Is your feature request related to a problem? Please describe.** Right now, Scalene's proposed optimizations focus exclusively on CPU and/or GPU time. We can do better with the information Scalene...

Right now, it calls printf and other outputs even on replay.

## Reproducible error: Switching the order of `_magic` with `_size` in `include/objectheader.h` causes a failure when running `examples/falsesharing`: ## Current order: Starting threads. theItem is at 0x8049e34 Done. Sheriff-Detect: false...

Automatically detect order invariance

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Per Dan's e-mail. After we build our dependence graph, we walk the tree, swapping input orders, one function at a time. If any function output changes when we do this,...

Add random checkbox fill.

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We currently use a dual approach to handle checkbox questions. Let's also randomize which boxes are checked and which are not. We can decide whether we can then dispense with...

We have long talked about adding support for open questions, where we proceed in two phases: collect responses, then have workers rank responses. It is not clear how many responses...

See https://github.com/plasma-umass/scalene/pull/799

`os.listdir` (and presumably other os functions) fails in the face of signals

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### Mountpoint for Amazon S3 version mount-s3 1.7.2 ### AWS Region us-east-1 ### Describe the running environment Running on EC2, accessing an S3 bucket through my account, using this AMI:...