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v1.8.1
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Author SHA1 Message Date
Christopher Berner
e027ef2af0 Rename .cargo/config to .cargo/config.toml 
This matches the Cargo documentation https://doc.rust-lang.org/cargo/reference/config.html
and should fix cargo-deny's parsing
 2021-03-28 09:49:20 -07:00
Christopher Berner
ee2407cb7c Add support for building Python bindings on M1 Mac 2021-03-28 09:49:20 -07:00
Christopher Berner
393b7096d9 Fix building Python bindings on Mac 2021-03-28 09:49:20 -07:00
Christopher Berner
c5e0188db3 Add CI for Mac 2021-03-28 09:49:20 -07:00
Christopher Berner
83101d6a7c Fix cargo test compilation error 2021-03-18 20:16:19 -07:00
Christopher Berner
c2a2e8a7c3 Bump version to 1.6.3 for release 2021-02-17 21:51:13 -08:00
Christopher Berner
c2e8a94a11 Update Raspberry Pi 3 B+ benchmarks 
The previous benchmarks were run with a faulty power supply which
artificially lowered the clock speed
 2021-02-15 16:21:31 -08:00
Christopher Berner
893e1c7c79 Optimize fma with GF2 with NEON 
Improves performance by ~2x on very large symbol counts
 2021-02-14 17:15:40 -08:00
Christopher Berner
8bbc99c5cd Update benchmarks on Raspberry Pi 2021-02-14 17:15:40 -08:00
Christopher Berner
e06af58ce2 Workaround bad compiler optimization with vshrq NEON instruction 
The vshrq intrinsic incorrectly compiles to 16 single byte shift instructions.

This improves throughput by ~50%
 2021-02-14 17:15:40 -08:00
Christopher Berner
a4db356932 Add NEON optimized mul_assign() function 
Speeds up this op by ~2x
 2021-02-14 17:15:40 -08:00
Christopher Berner
d0322d3ca4 Add NEON optimized FMA 
Speeds up FMA by ~3x, and encoding throughput by ~50%
 2021-02-14 17:15:40 -08:00
Christopher Berner
e3e9d6dcc2 Add NEON optimized implementation for octets::add_assign() 2021-02-14 17:15:40 -08:00
Christopher Berner
c1fa4e1f8e Add benchmarks on Raspberry Pi 3 B+ 2021-02-09 17:55:03 -08:00
Christopher Berner
63b2aec337 Fix 1:255 chance of test failure. 
The fused FMA function doesn't allow a scalar of 1
 2021-02-09 17:55:03 -08:00
Christopher Berner
c134e5b93e Fix panic on non-x86 platforms 
This panic'ed because fused_addassign_mul_scalar does not support
scalar=1, and it was used as the fallback
 2021-02-09 17:55:03 -08:00
Christopher Berner
30ed32e720 Update benchmarks 
Note: pre-built plan benchmarks improved because I fixed the RAM config
on my computer to increase bandwidth, not because of code changes
 2021-02-05 19:51:08 -08:00
Christopher Berner
562e64d438 Optimize column swapping substep for r > 1 
Improves performance by ~4%
 2021-02-05 19:51:08 -08:00
Christopher Berner
1241928a84 Optimize column swapping substep for r=1 
Improves performance by ~1%
 2021-02-05 19:51:08 -08:00
Christopher Berner
67a90ede4e Replace retain() with position() + swap_remove() 
This improves performance by 1-2%
 2021-02-05 19:51:08 -08:00
Christopher Berner
5e506b5b78 Merge .map().filter() into .filter_map() 2021-02-05 19:51:08 -08:00
Christopher Berner
a1d5894e25 Update benchmarks 2021-01-17 21:58:06 -08:00
Christopher Berner
7cfef09bc6 Don't eliminate sparse values from HDPC 
These are never read, except for debugging, and this improves perf by ~1%
 2021-01-17 21:24:08 -08:00
Christopher Berner
42c08b85c8 Remove unnecessary condition 
This is always true, since we're in the r = 1 case
 2021-01-17 21:24:08 -08:00
Christopher Berner
fa2064796c Fix some Clippy warnings 2021-01-17 15:53:44 -08:00
Christopher Berner
eb07e23208 Optimize HDPC generation with recursive calculation 
Improves performance on large symbol counts by > 10%
 2021-01-17 15:31:47 -08:00
Christopher Berner
f36bf73ca9 Reduce calls to rand() during HDPC generation 
Small improvement to performance. Perhaps 1%
 2021-01-17 13:09:52 -08:00
Christopher Berner
6546b714ad Skip elimination in V section of A during first phase 
This is safe due to Errata 11, and speeds up performance by a couple
percent
 2021-01-17 10:30:34 -08:00
Christopher Berner
905f78cfd0 Fix py_publish upload script 2021-01-15 19:42:47 -08:00
Christopher Berner
102ae0f7d6 Bump version to 1.6.2 for release 2021-01-14 21:40:46 -08:00
Christopher Berner
6d0f5e1b76 Build Python package with abi3 support 
This allows the package to be used on any Python version >= 3.6
 2021-01-14 21:33:19 -08:00
Christopher Berner
24235dd213 Optimize first phase to call ones_in_column() only once for r = 1 case 2020-12-26 20:46:47 -08:00
Christopher Berner
602fc8711d Reduce length of merge chains in union-find data structure 2020-12-26 20:46:47 -08:00
Christopher Berner
3cc21f5b42 Update readme with new benchmarks 2020-12-26 10:22:47 -08:00
Christopher Berner
3e88b065dd Optimize graph substep 
Use a union-find data structure which is incrementally updated, instead
of always recomputing the entire graph

This improves performance by 5-10%
 2020-12-26 10:05:53 -08:00
Christopher Berner
81d7cbbc65 Fix ordered list numbering in Errata document 2020-12-26 10:05:53 -08:00
Christopher Berner
26c9c2f6a0 Remove eliminate_leading_value() 
Also fix usage and semantics of selection helper .resize() method.
Previously, it said all values in first column had to be zero, but it
was called before those were eliminated
 2020-12-26 10:05:53 -08:00
Christopher Berner
a0b06313de Fix compilation error in codec_benchmark from rand upgrade 2020-12-26 10:05:53 -08:00
Christopher Berner
11d2de97f2 Update to rand 0.8 2020-12-19 13:14:12 -08:00
Christopher Berner
02ca60d2d4 Bump version to 1.6.1 for release 2020-12-09 10:24:16 -08:00
Christopher Berner
102c6a5a86 Optimize DenseBinaryMatrix 
Switch to a single contiguous vector instead of vec of vecs

This improves performance by ~5%, especially for smaller symbol counts
 2020-12-07 22:16:38 -08:00
Christopher Berner
7b0d1c5cff Remove X matrix from release builds 
This improve performance on small symbol counts by ~5%
 2020-12-06 15:36:43 -08:00
Christopher Berner
5c13e8de6e Further optimize fused_addassign_mul_scalar_binary_avx2() 
Move calculation of control flags out of loop to avoid one OR
instruction inside loop. Also statically enable BMI1 and detect its
presence to ensure that BEXTR2 intrinsic is inlined

Improves performance by ~5% on small symbol counts
 2020-12-06 15:36:43 -08:00
Christopher Berner
b4d4cfd273 Disable lto to fix perf debug symbol mapping 2020-12-06 15:36:43 -08:00
Christopher Berner
d87e46c625 Optimize DenseBinaryMatrix.swap_columns() 
Improves performance by 10-15% for symbol count = 100
 2020-12-06 08:15:21 -08:00
Christopher Berner
3a05d7be3e Add BinaryOctetVec 
Improves encoding speed of large symbol counts by ~5%
 2020-12-06 08:15:21 -08:00
Christopher Berner
50301e1b5b Optimize query_non_zero_columns() 
This reduces the time spent in the fourth phase from ~6% of encoding
time to ~1%, according to perf, and improves overall throughput by 3-4%
on large symbol counts.
 2020-11-29 09:51:56 -08:00
Christopher Berner
c4d227fba1 Optimize memory layout of dense U matrix 
Previously we used column major ordering. Switch to row major to
optimize sequential access of rows which is much more common in the
first phase, and can also be used in the fourth phase

This improves performance by ~10% on large symbol counts
 2020-11-28 21:08:35 -08:00
Christopher Berner
6245ab1c9a Fix over-allocation of memory for dense U section of matrix 
The previous code had an off by one error leading to an extra word being
allocated for each row
 2020-11-28 17:22:50 -08:00
Christopher Berner
3a4068a726 Fix typo in spelling of "access" 2020-11-28 17:22:50 -08:00