Mark Borgerding
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bd23fe8d23
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the path I was taking would only work for prime numbers (Galois fields)
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2003-11-08 01:42:15 +00:00 |
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Mark Borgerding
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e98f9ff29a
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going to bed
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2003-11-07 03:42:14 +00:00 |
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Mark Borgerding
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ae305ca400
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slightly faster
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2003-11-07 03:31:59 +00:00 |
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Mark Borgerding
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3a5791f203
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slightly faster
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2003-11-07 03:23:19 +00:00 |
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Mark Borgerding
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1486d89291
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faster
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2003-11-07 03:04:52 +00:00 |
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Mark Borgerding
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e9095a161c
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generic butterfly slightly slower -- hmmm
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2003-11-07 02:39:49 +00:00 |
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Mark Borgerding
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a296b09dbf
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wrong alloc size
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2003-11-07 01:06:44 +00:00 |
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Mark Borgerding
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cb5312efdc
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2d fft seems to work
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2003-11-06 03:59:31 +00:00 |
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Mark Borgerding
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4c458be5e9
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checkpoint -- I don't think I've broken anything (yet) adding 2d fft.
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2003-11-04 23:25:49 +00:00 |
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Mark Borgerding
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ee3094a0e4
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benchmark utilities
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2003-11-04 02:11:00 +00:00 |
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Mark Borgerding
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4ebf0b5aca
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aded a CHANGELOG
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2003-11-04 02:09:53 +00:00 |
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Mark Borgerding
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2788fba0bd
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added a CHANGELOG
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2003-11-04 02:09:48 +00:00 |
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Mark Borgerding
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8b4e3bacca
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minor comments and added some primes
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2003-11-04 02:00:01 +00:00 |
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Mark Borgerding
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6c8049cc75
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slight changes to Makefile
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2003-11-04 01:01:37 +00:00 |
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Mark Borgerding
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7b4de0aa11
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a little faster
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2003-11-03 04:30:50 +00:00 |
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Mark Borgerding
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ad4ee571aa
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faster radix5
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2003-11-03 04:04:01 +00:00 |
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Mark Borgerding
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0403fb3e4a
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radix 5 a little optimized
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2003-11-03 03:48:34 +00:00 |
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Mark Borgerding
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3c0c0431e2
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radix 5 works, but is 6x slower than fftw
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2003-11-03 03:03:16 +00:00 |
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Mark Borgerding
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85764e6437
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radix 5 doesn't work, but I thik it should.
just a checkpoint commit
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2003-11-01 16:48:33 +00:00 |
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Mark Borgerding
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8ac63adc77
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modified time benchmark to repeat same buffer over and over to avoid IO bottlenecks and get more consistent numbers.
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2003-11-01 04:44:50 +00:00 |
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Mark Borgerding
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471803ca08
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removed unused macro
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2003-11-01 04:26:02 +00:00 |
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Mark Borgerding
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7b7aefe7c4
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moved scratch buffer to stack variable
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2003-11-01 03:59:43 +00:00 |
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Mark Borgerding
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28551899e2
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radix 4 faster
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2003-11-01 03:49:53 +00:00 |
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Mark Borgerding
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d1df249536
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radix3 fixed point now works
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2003-10-31 04:01:09 +00:00 |
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Mark Borgerding
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b1969544a6
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radix 3 still doesn't work for fixed
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2003-10-30 03:00:49 +00:00 |
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Mark Borgerding
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d4f87befda
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re-added radix 3 butterfly
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2003-10-30 02:02:29 +00:00 |
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Mark Borgerding
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ca4c74e07c
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Woops, one should not test with input of all zeros
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2003-10-29 04:29:01 +00:00 |
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Mark Borgerding
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97b18f3fef
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comments
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2003-10-27 04:02:11 +00:00 |
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Mark Borgerding
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d9fcda04b6
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version 0.2 upload to sf
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2003-10-26 19:29:36 +00:00 |
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Mark Borgerding
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ecb1a76974
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added zip creation to tarball make target
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2003-10-26 04:25:18 +00:00 |
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Mark Borgerding
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1db3d91ee5
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getting ready for next release
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2003-10-26 04:07:32 +00:00 |
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Mark Borgerding
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52b4b9ab5c
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*** empty log message ***
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2003-10-18 01:45:26 +00:00 |
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Mark Borgerding
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c239ba2c1c
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slight code cleanup, comments
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2003-10-18 01:39:36 +00:00 |
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Mark Borgerding
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bca7fd5151
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compiles with -ansi -pedantic
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2003-10-18 01:23:34 +00:00 |
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Mark Borgerding
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e2470b3a03
|
*** empty log message ***
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2003-10-18 00:33:38 +00:00 |
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Mark Borgerding
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a3d3217ae6
|
*** empty log message ***
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2003-10-18 00:32:54 +00:00 |
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Mark Borgerding
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6f8bcedc24
|
radix 3 fixed point still broken
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2003-10-17 02:59:32 +00:00 |
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Mark Borgerding
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31d4214f44
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radix 3 seems to be pretty fast
fixed point broken for some reason
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2003-10-17 02:34:22 +00:00 |
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Mark Borgerding
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73744b908c
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check point
fixed does not currently work for radix 3
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2003-10-17 01:26:14 +00:00 |
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Mark Borgerding
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317f11e66e
|
starting point for radix 3
'make test' output
### testing SNR for 2187 point FFTs
#### DOUBLE
snr_t2f = 292.51
snr_f2t = 304.97
#### FLOAT
snr_t2f = 143.46
snr_f2t = 138.03
#### SHORT
snr_t2f = 49.257
snr_f2t = 16.294
#### timing 10000 x 2187 point FFTs
#### DOUBLE
Elapsed:0:05.05 user:3.60 sys:0.54
#### FLOAT
Elapsed:0:02.41 user:1.85 sys:0.23
#### SHORT
Elapsed:0:04.02 user:3.13 sys:0.08
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2003-10-17 00:11:19 +00:00 |
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Mark Borgerding
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d6ae498630
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took the bitwise and out of the switch case -- may have prevented optimization
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2003-10-15 03:45:24 +00:00 |
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Mark Borgerding
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5f0efe8f17
|
pretty happy with radix 2 and radix 4
next up is radix 3, or maybe 5
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2003-10-15 03:38:05 +00:00 |
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Mark Borgerding
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9504aa79c1
|
Fixed generic mixed radix butterfly
'make test' output:
### testing SNR for 1024 point FFTs
#### DOUBLE
snr_t2f = 296.95
snr_f2t = 317.25
#### FLOAT
snr_t2f = 147.96
snr_f2t = 145.14
#### SHORT
snr_t2f = 52.414
snr_f2t = 22.438
#### timing 10000 x 1024 point FFTs
#### DOUBLE
Elapsed:0:03.56 user:2.63 sys:0.19
#### FLOAT
Elapsed:0:01.35 user:1.07 sys:0.10
#### SHORT
Elapsed:0:01.70 user:1.37 sys:0.06
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2003-10-15 02:52:34 +00:00 |
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Mark Borgerding
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0424734e9d
|
radix 4 now about as fast as original version
'make test' output:
### testing SNR for 1024 point FFTs
#### DOUBLE
snr_t2f = 296.78
snr_f2t = 317.11
#### FLOAT
snr_t2f = 145.28
snr_f2t = 143.51
#### SHORT
snr_t2f = 52.409
snr_f2t = 22.174
#### timing 10000 x 1024 point FFTs
#### DOUBLE
Elapsed:0:03.43 user:2.68 sys:0.25
#### FLOAT
Elapsed:0:01.39 user:1.08 sys:0.11
#### SHORT
Elapsed:0:02.01 user:1.39 sys:0.09
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2003-10-15 01:52:13 +00:00 |
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Mark Borgerding
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f609401471
|
about to make some changes -- just wanted a checkpoint
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2003-10-15 00:05:50 +00:00 |
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Mark Borgerding
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2ae7e0f1f2
|
radix 4 works but slow
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2003-10-14 02:47:25 +00:00 |
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Mark Borgerding
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6b76490456
|
Fixed point works
'make test' output:
### testing SNR for 1024 point FFTs
#### DOUBLE
snr_t2f = 296.51
snr_f2t = 315.25
#### FLOAT
snr_t2f = 146.39
snr_f2t = 142.86
#### SHORT
snr_t2f = 58.077
snr_f2t = 27.897
#### timing 10000 x 1024 point FFTs
#### DOUBLE
Elapsed:0:01.53 user:1.06 sys:0.26
#### FLOAT
Elapsed:0:01.29 user:0.98 sys:0.12
#### SHORT
Elapsed:0:02.08 user:1.65 sys:0.03
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2003-10-14 01:09:33 +00:00 |
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Mark Borgerding
|
8460f1f8f5
|
added optimization for radix 2
### testing SNR for 1024 point FFTs
#### DOUBLE
snr_t2f = 296.29
snr_f2t = 314.48
#### FLOAT
snr_t2f = 146.48
snr_f2t = 143.03
#### SHORT
snr_t2f = -30.269
snr_f2t = -60.442
#### timing 10000 x 1024 point FFTs
#### DOUBLE
Elapsed:0:02.77 user:2.22 sys:0.13
#### FLOAT
Elapsed:0:01.65 user:1.35 sys:0.07
#### SHORT
Elapsed:0:02.44 user:2.00 sys:0.06
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2003-10-14 00:38:58 +00:00 |
|
Mark Borgerding
|
0d6d61cfce
|
reduced calling parameters
negligible performane impact
|
2003-10-11 23:07:16 +00:00 |
|
Mark Borgerding
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0d44569b3b
|
made one single malloc for all buffers
no noticable performance gain
|
2003-10-11 23:00:12 +00:00 |
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