hashcat Forum
Very slow at the end (>=1.30) - Printable Version

+- hashcat Forum (https://hashcat.net/forum)
+-- Forum: Deprecated; Previous versions (https://hashcat.net/forum/forum-29.html)
+--- Forum: Old oclHashcat Support (https://hashcat.net/forum/forum-38.html)
+--- Thread: Very slow at the end (>=1.30) (/thread-3878.html)

Very slow at the end (>=1.30) - passlab - 12-06-2014

I have a problem:
ocl64 and cuda64 v.130 and 1.31

Sometimes for attack methods Combinator and Hybryd
(1 dict smaller then 2-nd or mask keyspace; MD5, NTLM about 100 hashes)
(may be another too)
at the end of work (after ~96-97%)
very power decrease of speed (last 1% especially).
Fore example sometimes i have time of 95% work smaller then
time of last 5 % work.
(and 1.01 total time very smaller then total time 1.31)


At listing i have this string:
INFO: approaching final keyspace, workload adjusted

I used all combinations of workload_profile, gpu_accel and gpu_loops.

Can I deside this bug?
Can I block "workload adjusted" ?

RE: Very slow at the end (>=1.30) - epixoip - 12-06-2014

That's just the way it works. GPUs work on massively parallel problems, therefore you have to give them lots of work to do in order to gain acceleration. Once you start to run out of work, you start to lose acceleration. It's completely expected that it will slow down at the end.

This used to be much more dramatic in previous versions of oclHashcat, before atom added some code to adjust the workload once the final keyspace is approached. So you definitely don't want to "block" this, as the slow-down at the end would be much more dramatic without it.

RE: Very slow at the end (>=1.30) - passlab - 12-06-2014

But for example in 1.01 total time was 20 min,
in 1.31 - 45 min (at 4 GPU)
(at the end only 1 GPU work at very slaw speed)

RE: Very slow at the end (>=1.30) - epixoip - 12-06-2014

how are you measuring this? or is this from memory only.

RE: Very slow at the end (>=1.30) - passlab - 12-06-2014

listings i can publish later

RE: Very slow at the end (>=1.30) - epixoip - 12-07-2014

ok...

RE: Very slow at the end (>=1.30) - passlab - 12-08-2014

1.31: instead of 10 min --> 28 min

./oclHashcat64.bin -a 6 -m 1000 --markov-disable --status --status-timer=240 --logfile-disable --restore-disable --potfile-disable NT.txt 76.dict ?a?a?a?a
oclHashcat v1.31 starting...

Generating dictionary stats for 76.dict: 28396 bytes (100.00%), 3000 words, 244351875000 keyspace

Generated dictionary stats for 76.dict: 28396 bytes, 3000 words, 244351875000 keyspace



INFO: approaching final keyspace, workload adjusted

[s]tatus [p]ause [r]esume [b]ypass [q]uit =>

Session.Name...: oclHashcat
Status.........: Running
Input.Base.....: File (76.dict)
Input.Mod......: Mask (?a?a?a?a) [4]
Hash.Target....: File (NT.txt)
Hash.Type......: NTLM
Time.Started...: Fri Dec 5 13:02:41 2014 (3 mins, 59 secs)
Time.Estimated.: Fri Dec 5 13:12:27 2014 (5 mins, 44 secs)
Speed.GPU.#1...: 105.0 MH/s
Speed.GPU.#2...: 107.8 MH/s
Speed.GPU.#3...: 106.4 MH/s
Speed.GPU.#4...: 106.0 MH/s
Speed.GPU.#*...: 425.3 MH/s
Recovered......: 0/65 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 100260335616/244351875000 (41.03%)
Skipped........: 0/100260335616 (0.00%)
Rejected.......: 0/100260335616 (0.00%)
HWMon.GPU.#1...: 90% Util, 40c Temp, 80% Fan
HWMon.GPU.#2...: 89% Util, 46c Temp, 80% Fan
HWMon.GPU.#3...: 90% Util, 40c Temp, 80% Fan
HWMon.GPU.#4...: 89% Util, 44c Temp, 80% Fan



Session.Name...: oclHashcat
Status.........: Running
Input.Base.....: File (76.dict)
Input.Mod......: Mask (?a?a?a?a) [4]
Hash.Target....: File (NT.txt)
Hash.Type......: NTLM
Time.Started...: Fri Dec 5 13:02:41 2014 (7 mins, 59 secs)
Time.Estimated.: Fri Dec 5 13:12:24 2014 (1 min, 41 secs)
Speed.GPU.#1...: 106.2 MH/s
Speed.GPU.#2...: 106.4 MH/s
Speed.GPU.#3...: 106.4 MH/s
Speed.GPU.#4...: 106.2 MH/s
Speed.GPU.#*...: 425.1 MH/s
Recovered......: 0/65 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 201526185984/244351875000 (82.47%)
Skipped........: 0/201526185984 (0.00%)
Rejected.......: 0/201526185984 (0.00%)
HWMon.GPU.#1...: 91% Util, 42c Temp, 80% Fan
HWMon.GPU.#2...: 89% Util, 47c Temp, 80% Fan
HWMon.GPU.#3...: 91% Util, 41c Temp, 80% Fan
HWMon.GPU.#4...: 89% Util, 44c Temp, 80% Fan



Session.Name...: oclHashcat
Status.........: Running
Input.Base.....: File (76.dict)
Input.Mod......: Mask (?a?a?a?a) [4]
Hash.Target....: File (NT.txt)
Hash.Type......: NTLM
Time.Started...: Fri Dec 5 13:02:41 2014 (12 mins, 0 secs)
Time.Estimated.: Fri Dec 5 13:15:25 2014 (42 secs)
Speed.GPU.#1...: 33141.1 kH/s
Speed.GPU.#2...: 1228.8 kH/s
Speed.GPU.#3...: 1074.5 kH/s
Speed.GPU.#4...: 1402.1 kH/s
Speed.GPU.#*...: 36846.5 kH/s
Recovered......: 0/65 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 230825953472/244351875000 (94.46%)
Skipped........: 0/230825953472 (0.00%)
Rejected.......: 0/230825953472 (0.00%)
HWMon.GPU.#1...: 79% Util, 41c Temp, 80% Fan
HWMon.GPU.#2...: 79% Util, 46c Temp, 80% Fan
HWMon.GPU.#3...: 78% Util, 39c Temp, 80% Fan
HWMon.GPU.#4...: 79% Util, 43c Temp, 80% Fan



Session.Name...: oclHashcat
Status.........: Running
Input.Base.....: File (76.dict)
Input.Mod......: Mask (?a?a?a?a) [4]
Hash.Target....: File (NT.txt)
Hash.Type......: NTLM
Time.Started...: Fri Dec 5 13:02:41 2014 (16 mins, 0 secs)
Time.Estimated.: Fri Dec 5 13:19:02 2014 (19 secs)
Speed.GPU.#1...: 33768.6 kH/s
Speed.GPU.#2...: 1248.5 kH/s
Speed.GPU.#3...: 1094.2 kH/s
Speed.GPU.#4...: 1404.5 kH/s
Speed.GPU.#*...: 37515.8 kH/s
Recovered......: 0/65 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 239607251392/244351875000 (98.06%)
Skipped........: 0/239607251392 (0.00%)
Rejected.......: 0/239607251392 (0.00%)
HWMon.GPU.#1...: 90% Util, 41c Temp, 80% Fan
HWMon.GPU.#2...: 91% Util, 46c Temp, 80% Fan
HWMon.GPU.#3...: 90% Util, 39c Temp, 80% Fan
HWMon.GPU.#4...: 90% Util, 43c Temp, 80% Fan



Session.Name...: oclHashcat
Status.........: Running
Input.Base.....: File (76.dict)
Input.Mod......: Mask (?a?a?a?a) [4]
Hash.Target....: File (NT.txt)
Hash.Type......: NTLM
Time.Started...: Fri Dec 5 13:02:41 2014 (20 mins, 0 secs)
Time.Estimated.: Fri Dec 5 13:22:45 2014 (2 secs)
Speed.GPU.#1...: 1312.2 kH/s
Speed.GPU.#2...: 0 H/s
Speed.GPU.#3...: 0 H/s
Speed.GPU.#4...: 0 H/s
Speed.GPU.#*...: 1312.2 kH/s
Recovered......: 0/65 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 243867829168/244351875000 (99.80%)
Skipped........: 0/243867829168 (0.00%)
Rejected.......: 0/243867829168 (0.00%)
HWMon.GPU.#1...: 92% Util, 40c Temp, 80% Fan
HWMon.GPU.#2...: 0% Util, 32c Temp, 80% Fan
HWMon.GPU.#3...: 0% Util, 29c Temp, 80% Fan
HWMon.GPU.#4...: 0% Util, 30c Temp, 80% Fan



Session.Name...: oclHashcat
Status.........: Running
Input.Base.....: File (76.dict)
Input.Mod......: Mask (?a?a?a?a) [4]
Hash.Target....: File (NT.txt)
Hash.Type......: NTLM
Time.Started...: Fri Dec 5 13:02:41 2014 (24 mins, 0 secs)
Time.Estimated.: Fri Dec 5 13:26:45 2014 (1 sec)
Speed.GPU.#1...: 1288.8 kH/s
Speed.GPU.#2...: 0 H/s
Speed.GPU.#3...: 0 H/s
Speed.GPU.#4...: 0 H/s
Speed.GPU.#*...: 1288.8 kH/s
Recovered......: 0/65 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 244179280816/244351875000 (99.93%)
Skipped........: 0/244179280816 (0.00%)
Rejected.......: 0/244179280816 (0.00%)
HWMon.GPU.#1...: 90% Util, 40c Temp, 80% Fan
HWMon.GPU.#2...: 0% Util, 31c Temp, 80% Fan
HWMon.GPU.#3...: 0% Util, 28c Temp, 80% Fan
HWMon.GPU.#4...: 0% Util, 29c Temp, 80% Fan



Session.Name...: oclHashcat
Status.........: Exhausted
Input.Base.....: File (76.dict)
Input.Mod......: Mask (?a?a?a?a) [4]
Hash.Target....: File (NT.txt)
Hash.Type......: NTLM
Time.Started...: Fri Dec 5 13:02:41 2014 (26 mins, 15 secs)
Time.Estimated.: 0 secs
Speed.GPU.#1...: 1281.7 kH/s
Speed.GPU.#2...: 0 H/s
Speed.GPU.#3...: 0 H/s
Speed.GPU.#4...: 0 H/s
Speed.GPU.#*...: 1281.7 kH/s
Recovered......: 0/65 (0.00%) Digests, 0/1 (0.00%) Salts
Progress.......: 244351875000/244351875000 (100.00%)
Skipped........: 0/244351875000 (0.00%)
Rejected.......: 0/244351875000 (0.00%)
HWMon.GPU.#1...: 85% Util, 40c Temp, 80% Fan
HWMon.GPU.#2...: 0% Util, 31c Temp, 80% Fan
HWMon.GPU.#3...: 0% Util, 28c Temp, 80% Fan
HWMon.GPU.#4...: 0% Util, 29c Temp, 80% Fan

RE: Very slow at the end (>=1.30) - iRuser - 12-28-2014

I just got two new GTX980's today and running my old 580ti via 1x to 16x riser. PLaying around with hashcat and came across an issue relating to this post, let me know if i should put elsewhere. I get the theory on why things slow down at as we reduce the workload, but out of the three cards to choose from cudaHashcat v1.31 keeps seemingly choosing to finish the last leg on the weakest card of the 3 making it painfully slow. Why? Is there any way I can change this or can you consider making a small tweak to the logic in a future update?

Code:
$ ./cudaHashcat64.bin -m 2811 -a 0 nothing2seehere.hashes cracked_pass.txt -r ../customRules/1.rule -o nothing2seehere.cracked --remove --gpu-async --gpu-accel=80 --gpu-loops=1024
cudaHashcat v1.31 starting...

Device #1: GeForce GTX 980, 4095MB, 1367Mhz, 16MCU
Device #1: WARNING! Kernel exec timeout is not disabled, it might cause you errors of code 702
Device #2: GeForce GTX 980, 4095MB, 1367Mhz, 16MCU
Device #3: GeForce GTX 560 Ti, 1023MB, 1700Mhz, 8MCU

Hashes: 251762 hashes; 251762 unique digests, 251730 unique salts
Bitmaps: 21 bits, 2097152 entries, 0x001fffff mask, 8388608 bytes
Rules: 181
Applicable Optimizers:
* Zero-Byte
* Precompute-Init
* Early-Skip
* Not-Iterated
Watchdog: Temperature abort trigger set to 90c
Watchdog: Temperature retain trigger set to 80c
Device #1: Kernel ./kernels/4318/m02810_a0.sm_52.64.ptx
Device #1: Kernel ./kernels/4318/bzero.64.ptx
Device #2: Kernel ./kernels/4318/m02810_a0.sm_52.64.ptx
Device #2: Kernel ./kernels/4318/bzero.64.ptx
Device #3: Kernel ./kernels/4318/m02810_a0.sm_21.64.ptx
Device #3: Kernel ./kernels/4318/bzero.64.ptx

Cache-hit dictionary stats cracked_pass.txt: 1142036 bytes, 126254 words, 22851974 keyspace
                                            
INFO: approaching final keyspace, workload adjusted

[s]tatus [p]ause [r]esume [b]ypass [q]uit => s

Hashes: 251762 hashes; 251762 unique digests, 251730 unique salts
Bitmaps: 21 bits, 2097152 entries, 0x001fffff mask, 8388608 bytes
Rules: 181
Applicable Optimizers:
* Zero-Byte
* Precompute-Init
* Early-Skip
* Not-Iterated
Watchdog: Temperature abort trigger set to 90c
Watchdog: Temperature retain trigger set to 80c
Device #1: Kernel ./kernels/4318/m02810_a0.sm_52.64.ptx
Device #1: Kernel ./kernels/4318/bzero.64.ptx
Device #2: Kernel ./kernels/4318/m02810_a0.sm_52.64.ptx
Device #2: Kernel ./kernels/4318/bzero.64.ptx
Device #3: Kernel ./kernels/4318/m02810_a0.sm_21.64.ptx
Device #3: Kernel ./kernels/4318/bzero.64.ptx

Cache-hit dictionary stats acne_cracked_pass.txt: 1142036 bytes, 126254 words, 22851974 keyspace

                                            
INFO: approaching final keyspace, workload adjusted

[s]tatus [p]ause [r]esume [b]ypass [q]uit => s

Session.Name...: cudaHashcat
Status.........: Running
Rules.Type.....: File (../customRules/1.rule)
Input.Mode.....: File (cracked_pass.txt)
Hash.Target....: File (nothing2seehere.hashes)
Hash.Type......: IPB2+, MyBB1.2+
Time.Started...: Sat Dec 27 18:50:36 2014 (2 mins, 30 secs)
Time.Estimated.: Sat Dec 27 19:37:54 2014 (44 mins, 44 secs)
Speed.GPU.#1...:     3758 H/s
Speed.GPU.#2...:     3645 H/s
Speed.GPU.#3...:      626 H/s
Speed.GPU.#*...:     8029 H/s
Recovered......: 0/251762 (0.00%) Digests, 0/251730 (0.00%) Salts
Progress.......: 305965296000/5752527415020 (5.32%)
Skipped........: 0/305965296000 (0.00%)
Rejected.......: 0/305965296000 (0.00%)
HWMon.GPU.#1...: -1% Util, 67c Temp, 40% Fan
HWMon.GPU.#2...: -1% Util, 69c Temp, 17% Fan
HWMon.GPU.#3...: -1% Util, 70c Temp, 18% Fan

[s]tatus [p]ause [r]esume [b]ypass [q]uit => s

Session.Name...: cudaHashcat
Status.........: Running
Rules.Type.....: File (../customRules/1.rule)
Input.Mode.....: File (cracked_pass.txt)
Hash.Target....: File (nothing2seehere.hashes)
Hash.Type......: IPB2+, MyBB1.2+
Time.Started...: Sat Dec 27 18:50:36 2014 (59 mins, 50 secs)
Time.Estimated.: Sat Dec 27 19:57:13 2014 (6 mins, 43 secs)
Speed.GPU.#1...:        0 H/s
Speed.GPU.#2...:        0 H/s
Speed.GPU.#3...:      628 H/s
Speed.GPU.#*...:      628 H/s
Recovered......: 806/251762 (0.32%) Digests, 806/251730 (0.32%) Salts
Progress.......: 5171375800620/5752527415020 (89.90%)
Skipped........: 4331820510/5171375800620 (0.08%)
Rejected.......: 0/5171375800620 (0.00%)
HWMon.GPU.#1...: -1% Util, 73c Temp, 44% Fan
HWMon.GPU.#2...: -1% Util, 46c Temp,  0% Fan
HWMon.GPU.#3...: -1% Util, 51c Temp,  0% Fan