Squashed commit of the following:
commit 44d3736de87834b41118d45831e59fc2b052117c
Merge: fcf795f 3127962
Author: Andrew Sun <as-com@users.noreply.github.com>
Date: Thu Jan 11 20:01:13 2024 -0500
Merge branch 'gunnarmorling:main' into as-com
commit fcf795fbabacbd91891d11d21450ee4b1c479dc5
Author: Andrew Sun <me@andrewsun.com>
Date: Wed Jan 10 21:14:01 2024 -0500
Optimizations to Andrew Sun's entry
commit 4203924711bab5252ff3cbb50a90f4ce4e8e67c2
Merge: 9aed05a 085168a
Author: Andrew Sun <me@andrewsun.com>
Date: Wed Jan 10 19:40:19 2024 -0500
Merge remote-tracking branch 'upstream/main' into as-com
commit 9aed05a04bd27fe7323e66c347b1011c77da322c
Merge: 3f8df58 c2d120f
Author: Andrew Sun <me@andrewsun.com>
Date: Sun Jan 7 16:45:27 2024 -0500
Merge remote-tracking branch 'origin/as-com' into as-com
# Conflicts:
# calculate_average_asun.sh
# src/main/java/dev/morling/onebrc/CalculateAverage_asun.java
commit c2d120f0cb7f18c720a81a7f898102b310f9ecb9
Author: Andrew Sun <me@andrewsun.com>
Date: Sat Jan 6 00:45:47 2024 -0500
Add entry by Andrew Sun
commit 3f8df5803bcc8f3e29ed8bfff3077eb0e8cdab15
Author: Andrew Sun <me@andrewsun.com>
Date: Sat Jan 6 00:45:47 2024 -0500
Add entry by Andrew Sun
* Graal Native
* I need a GC :(
* Fix slash lolz
* Fix god damn output lol
I forgot java :D
* Custom hash, custom key
* More optimisations
* I don't need "optimize-build"
I don't care about image size! :D
- Eliminate redundant object creations in between
- Custom HashMap on purpose - Inspired by @spullara
- More performant temperature parsing - Inspired by @yemreinci
- JVM tweaks, decreased heap memory, and remove AlwaysPreTouch
Co-authored-by: Yavuz Tas <yavuz.tas@ing.com>
* Create clones
* Cleanup code and add memory mapping to read file
* Fix chunks reading logic to fit linebreak
* Remove unused
* Sequential
* Multi thread process chunks
* Add new line in output
* Remove unnecessary operation with map & reducer memory
* Reduce mem usage by using only 1 map
* formatting
* Remove unnecessary length check
* Remove trycatch
* Optimize double parsing
* check full hash before comparing
* implement merykitty suggestions to simplify temperature masking; required refactoring to little-endian
* standalone script for offline Perfect Hash seed searching
* stop using an oversized hash table
---------
Co-authored-by: Jason Nochlin <hundredwatt@users.noreply.github.com>
* divide the reading of the file by parts
* fix format
* add number of core partition
* fix format
* implement strToDouble
* fix strtodouble
* add locale, fix read file, tests pass
* delete unnecessary method clean
* First Version
First draft; stole chunking but it's bad
Forgot my changes
No regex building
Clean & optim
I was not benchmarking myself T_T
Faaaster
First Version
* Update calculate_average_samuelyvon.sh
Co-authored-by: Gunnar Morling <gunnar.morling@googlemail.com>
* Add prepare script
* Fix rounding
* Fix format
* Fixing casing
* Formats of sorts?
* Rename
---------
Co-authored-by: Gunnar Morling <gunnar.morling@googlemail.com>
* calculate_average_mtopolnik
* short hash (just first 8 bytes of name)
* Remove unneeded checks
* Remove archiving classes
* 2x larger hashtable
* Add "set" to setters
* Simplify parsing temperature, remove newline search
* Reduce the size of the name slot
* Store name length and use to detect collision
* Reduce memory loads in parseTemperature
* Use short for min/max
* Extract constant for semicolon
* Fix script header
* Explicit bash shell in shebang
* Inline usage of broadcast semicolon
* Try vectorization
* Remove vectorization
* Go Unsafe
* Use SWAR temperature parsing by merykitty
* Inline some things
* Remove commented-out MemorySegment usage
* Inline namesMem.asSlice() invocation
* Try out JVM JIT flags
* Implement strcmp
* Remove unused instance variables
* Optimize hashing
* Put station name into hashtable
* Reorder method
* Remove usage of MemorySegment.getUtf8String
Replace with UNSAFE.copyMemory() and new String()
* Fix hashing bug
* Remove outdated comments
* Fix informative constants
* Use broadcastByte() more
* Improve method naming
* More hashing
* Revert more hashing
* Add commented-out code to hash 16 bytes
* Slight cleanup
* Align hashtable at cacheline boundary
* Add Graal Native image
* Revert Graal Native image
This reverts commit d916a42326d89bd1a841bbbecfae185adb8679d7.
* Simplify shell script (no SDK selection)
* Move a constant, zero out hashtable on start
* Better name comparison
* Add prepare_mtopolnik.sh
* Cleaner idiom in name comparison
* AND instead of MOD for hashtable indexing
* Improve word masking code
* Fix formatting
* Reduce memory loads
* Remove endianness checks
* Avoid hash == 0 problem
* Fix subtle bug
* MergeSort of parellel results
* Touch up perf
* Touch up perf
* Remove -Xmx256m
* Extract result printing method
* Print allocation details on OOME
* Single mmap
* Use global allocation arena
* initial commit
* - use loop
- use mutable object to store results
* get rid of regex
* Do not allocate measurement objects
* MMap + custom double parsing ~ 1:30 (down from ~ 2:05)
* HashMap for accumulation and only sort at the end - 1:05
* MMap the whole file
* Use graal
* no GC
* Store results in an array list to avoid double map lookup
* Adjust max buf size
* Manual parsing number to long
* Add --enable-preview
* remove buffer size check (has no effect on performance)
* fix min & max initialization
* do not check for \r
* Revert "do not check for \r"
This reverts commit 9da1f574bf6261ea49c353488d3b4673cad3ce6e.
* Optimise parsing. Now completes in 31 sec down from ~43
* trying to parse numbers faster
* use open address hash table instead of the standard HashMap
* formatting
* Rename the script to match github username (change underscores to slashes)
Enable transparent huge pages, seems to improve by ~2 sec
* Revert "formatting"
This reverts commit 4e90797d2a729ed7385c9000c85cc7e87d935f96.
* Revert "use open address hash table instead of the standard HashMap"
This reverts commit c784b55f61e48f548b2623e5c8958c9b283cae14.
* add prepare_roman-r-m.sh
* SWAR tricks to find semicolon (-2 seconds ro run time)
* remove time call
* fix test
* Parallel version (~6.5 seconds)
* Add multithreaded variant to generate measurements
* Add removing existing measurements.txt file in case exists (for usability reasons)
Fix bug for number of lines generated
* Fix also for less than assumed chunk size (10M entries) per thread
#### Check List:
- [x] Tests pass (`./test.sh MeanderingProgrammer` shows no differences between expected and actual outputs)
- [x] All formatting changes by the build are committed
- [x] Your launch script is named `calculate_average_MeanderingProgrammer.sh` (make sure to match casing of your GH user name) and is executable
- [x] Output matches that of `calculate_average_baseline.sh`
* Execution time: `00:04.668`
* Execution time of reference implementation: `02:40.597`
* System: Apple M2 Max, 12 cores, 64 GB
* Implementation CalculateAverage_japplis of 1BRC from Anthony Goubard (japplis).
Local performance (7 years old desktop i7-6700K - 8 cores - 16GB) 26 seconds. For reference, Jamie Stansfield (isolgpus) is 23 seconds on my machine and 11s in your results.
I've added the nbactions.xml to the .gitignore file. When you add in NetBeans options like --enable-preview to actions like debug file or run file, it creates this file.
* Implementation CalculateAverage_japplis of 1BRC from Anthony Goubard (japplis).
Local performance (7 years old desktop i7-6700K - 8 cores - 16GB) 26 seconds. For reference, Jamie Stansfield (isolgpus) is 23 seconds on my machine and 11s in your results.
I've added the nbactions.xml to the .gitignore file. When you add in NetBeans options like --enable-preview to actions like debug file or run file, it creates this file.
second commit: Removed BufferedInputStream and replaced Measurement with IntSummaryStatistics (thanks davecom): still 23" but cleaner code
