Large matrix multiplication

Multiply two square matrices as fast as possible.

Input

Two 2000 x 2000 matrices of uint32 values on STDIN, encoded back-to-back in row-major order, little-endian byte order.

Output

Write the resulting 2000 x 2000 product matrix to STDOUT in the same binary format (row-major, little-endian uint32).

Restrictions:60s256Mb 1 Score Packages

Feel free to create an issue if you need an extra library from the standard Ubuntu repository.

Name	Version	Description
libc6-dev	2.39-0ubuntu8.7	GNU C Library: Development Libraries and Header Files Contains the symlinks, headers, and object files needed to compile and link programs which use the standard C library.
libclang-common-14-dev	1:14.0.6-19build4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-15-dev	1:15.0.7-14build3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-16-dev	1:16.0.6-23ubuntu4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-17-dev	1:17.0.6-9ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-18-dev	1:18.1.3-1ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-19-dev	1:19.1.1-1ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-20-dev	1:20.1.2-0ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libcrypt-dev	1:4.4.36-4build1	libcrypt development files This package contains the files needed for developing applications that use libcrypt.
libgcc-10-dev	10.5.0-4ubuntu2.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-11-dev	11.5.0-1ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-12-dev	12.4.0-2ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-13-dev	13.3.0-6ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-14-dev	14.2.0-4ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libobjc-13-dev	13.3.0-6ubuntu2~24.04.1	Runtime library for GNU Objective-C applications (development files) This package contains the headers and static library files needed to build GNU ObjC applications.
libssl-dev	3.0.13-0ubuntu3.9	Secure Sockets Layer toolkit - development files This package is part of the OpenSSL project's implementation of the SSL and TLS cryptographic protocols for secure communication over the Internet. . It contains development libraries, header files, and manpages for libssl and libcrypto.
libstdc++-10-dev	10.5.0-4ubuntu2.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-11-dev	11.5.0-1ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-12-dev	12.4.0-2ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-13-dev	13.3.0-6ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-14-dev	14.2.0-4ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libtbb-dev	2021.11.0-2ubuntu2	parallelism library for C++ - development files TBB is a library that helps you leverage multi-core processor performance without having to be a threading expert. It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanism for performance and scalability. . (Note: if you are a user of the i386 architecture, i.e., 32-bit Intel or compatible hardware, this package only supports Pentium4-compatible and higher processors.) . This package includes the TBB development files.

Back to listMar 14, 2026 16:54

Dominique GarmierScore: 7,257Success

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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 14, 2026 17:02	7,041	1,083,445,970	1,024,142,000	31,942,000	17,186,816
2	Mar 14, 2026 17:42	7,086	1,092,037,999	1,035,893,000	26,945,000	17,092,608
3	Mar 14, 2026 16:46	7,086	1,089,527,032	1,029,954,000	32,934,000	17,006,592
4	Mar 14, 2026 17:17	7,088	1,094,537,466	1,033,225,000	29,948,000	17,055,744
5	Mar 14, 2026 17:42	7,097	1,093,662,531	1,033,612,000	30,928,000	16,961,536
6	Mar 14, 2026 16:46	7,104	1,092,449,315	1,033,737,000	31,930,000	16,961,536
7	Mar 14, 2026 17:42	7,109	1,094,465,488	1,030,482,000	35,912,000	17,072,128
8	Mar 14, 2026 16:46	7,114	1,096,239,784	1,040,095,000	26,950,000	17,035,264
9	Mar 14, 2026 17:42	7,114	1,087,657,114	1,036,115,000	30,943,000	16,961,536
10	Mar 14, 2026 16:46	7,116	1,097,309,094	1,035,547,000	31,924,000	16,961,536
11	Mar 14, 2026 17:42	7,137	1,106,023,324	1,038,637,000	31,927,000	17,076,224
12	Mar 14, 2026 17:42	7,141	1,099,626,117	1,038,143,000	32,941,000	17,051,648
13	Mar 14, 2026 16:46	7,154	1,099,039,595	1,040,188,000	32,942,000	17,043,456
14	Mar 14, 2026 17:49	7,163	1,105,119,325	1,043,594,000	30,928,000	17,039,360
15	Mar 14, 2026 17:17	7,164	1,098,947,751	1,042,673,000	31,928,000	17,043,456
16	Mar 14, 2026 17:03	7,166	1,099,573,071	1,046,965,000	27,945,000	17,039,360
17	Mar 14, 2026 16:55	7,186	1,105,872,878	1,040,942,000	36,927,000	16,994,304
18	Mar 14, 2026 17:15	7,204	1,109,653,260	1,048,743,000	31,931,000	17,047,552
19	Mar 14, 2026 17:02	7,214	1,111,836,215	1,046,136,000	35,935,000	16,961,536
20	Mar 14, 2026 17:42	7,220	1,108,359,982	1,051,007,000	31,939,000	16,969,728
21	Mar 14, 2026 17:42	7,224	1,112,239,417	1,052,607,000	30,929,000	16,957,440
22	Mar 14, 2026 16:46	7,251	1,117,996,987	1,055,777,000	31,932,000	16,973,824
23	Mar 14, 2026 17:40	7,257	1,121,667,290	1,057,650,000	30,931,000	17,059,840
24	Mar 14, 2026 16:46	7,336	1,132,558,842	1,068,452,000	31,923,000	17,014,784
25	Mar 14, 2026 16:54	7,351	1,131,851,607	1,072,645,000	29,934,000	17,047,552
26	Mar 14, 2026 17:02	7,365	1,132,582,543	1,070,775,000	33,929,000	17,154,048
27	Mar 14, 2026 17:49	7,375	1,130,765,309	1,075,253,000	30,949,000	17,043,456
28	Mar 14, 2026 17:15	7,377	1,140,775,986	1,075,600,000	30,931,000	17,158,144
29	Mar 14, 2026 17:07	7,378	1,134,006,669	1,075,694,000	30,933,000	17,051,648
30	Mar 14, 2026 17:15	7,390	1,140,289,102	1,075,527,000	32,924,000	17,133,568
31	Mar 14, 2026 16:55	7,391	1,137,319,239	1,074,717,000	33,927,000	17,018,880
32	Mar 14, 2026 17:40	7,392	1,141,330,637	1,079,922,000	28,944,000	17,039,360
33	Mar 14, 2026 16:46	7,395	1,138,815,334	1,079,350,000	29,954,000	17,039,360
34	Mar 14, 2026 17:49	7,396	1,138,963,705	1,078,529,000	30,929,000	17,186,816
35	Mar 14, 2026 17:03	7,421	1,145,184,850	1,081,266,000	31,948,000	16,961,536
36	Mar 14, 2026 16:46	7,426	1,142,681,359	1,082,031,000	31,941,000	17,096,704
37	Mar 14, 2026 17:07	7,430	1,143,662,318	1,081,568,000	32,925,000	17,014,784
38	Mar 14, 2026 17:40	7,433	1,143,905,710	1,081,079,000	33,939,000	16,969,728
39	Mar 14, 2026 17:17	7,434	1,146,648,193	1,087,159,000	27,952,000	17,068,032
40	Mar 14, 2026 16:55	7,439	1,144,509,451	1,083,911,000	31,938,000	17,002,496
41	Mar 14, 2026 17:07	7,442	1,151,734,809	1,084,326,000	31,950,000	16,961,536
42	Mar 14, 2026 17:03	7,442	1,157,165,578	1,082,356,000	33,917,000	17,051,648
43	Mar 14, 2026 17:42	7,450	1,154,237,421	1,081,525,000	35,917,000	17,022,976
44	Mar 14, 2026 16:54	7,450	1,150,858,409	1,084,565,000	32,926,000	16,965,632
45	Mar 14, 2026 16:54	7,462	1,148,065,305	1,089,322,000	29,953,000	17,039,360

Model	Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz
Cores	1