1brc/prepare_mtopolnik.sh

#!/bin/bash
#
#  Copyright 2023 The original authors
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#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
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source "$HOME/.sdkman/bin/sdkman-init.sh"
sdk use java 21.0.1-graal 1>&2
Use bash in prepare scripts (#339) Prepare scripts that use `#!/bin/sh` and `source "$HOME/.sdkman/bin/sdkman-init.sh"` fail on systems where `sh` is not `bash`, e.g. on Ubuntu it is `dash` which has not `source`. 2024-01-12 08:25:43 +01:00			`#!/bin/bash`
Entry into the contest, calculate_average_mtopolnik.sh (#246) * 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usage of MemorySegment.getUtf8String Replace with UNSAFE.copyMemory() and new String() * Fix hashing bug * Remove outdated comments * Fix informative constants * Use broadcastByte() more * Improve method naming * More hashing * Revert more hashing * Add commented-out code to hash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 2024-01-11 20:02:14 +01:00			`#`
			`# Copyright 2023 The original authors`
			`#`
			`# Licensed under the Apache License, Version 2.0 (the "License");`
			`# you may not use this file except in compliance with the License.`
			`# You may obtain a copy of the License at`
			`#`
			`# http://www.apache.org/licenses/LICENSE-2.0`
			`#`
			`# Unless required by applicable law or agreed to in writing, software`
			`# distributed under the License is distributed on an "AS IS" BASIS,`
			`# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.`
			`# See the License for the specific language governing permissions and`
			`# limitations under the License.`
			`#`

			`source "$HOME/.sdkman/bin/sdkman-init.sh"`
			`sdk use java 21.0.1-graal 1>&2`