SHA-3 ad hoc compiler: Reloaded

count_the_monkeysIt occurred to me that SHA-3 being a cryptographic hash, it is one of those peculiar bits of code that are fully self-testing. Any bug in a cryptographic hash will quickly cascade to a different result, no matter the bug or the input.

This means the ad-hoc-compiler-monkey can be unleashed “safely”, and can be allowed to try “improper changes.”
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Delphi XE6 32bits and Scimark

8087In a Google+ comment to my recent article about inlining in XE6, Leif Uneus posted results from Scimark.

It appears that XE6 is about 30% slower than previous versions at least from XE5 to XE for 32bits floating point.
Note that Scimark does not make use of inlining, but does make heavy use of floating-point computations, loops and arrays.

Edit: issue discussed here was reported in QC 124652 (now marked as resolved)
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Flush Windows File Cache

sweepHere is a small utility I made whose purpose is to flush (empty) the Windows file cache. It can also flush and purge memory working sets, standby and modified lists.

It can be useful to reduce memory usage of a particular VM (on a host with dynamic memory) or for testing and bench-marking purposes.

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