Multithreading does not work

[mpsOxygen]

Tried the this version hoping it would be much faster but i get the same ~50.000 w/s as I was with the original pdfcrack even though i specified -t 4. Tried with -t 10 and I see the same speed and the same load on my CPU cores, only 1 of them is ever at 100% the rest are either idle or if one is at 50% another is at 50%, but never more then one core at 100%.

I'm running Fedora 23 with an Intel Core i7-4770S CPU @ 3.10GHz

top -H -p pid also shows a single thread running.

[WoutDev]

+1

[marvin2k]

+1

[shreepads]

Can you add the exact command used and the output as an attached text file?

Also i hope you used the correct branch.

Shreepad

On 21-Oct-2016 12:56 AM, "Wout" [email protected] wrote:

+1

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[shreepads]

Well that's good.

Any of the other + 1s or the bug submitter can confirm the same works for
them?

Shreepad

On 26-Oct-2016 4:59 PM, "marvin2k" [email protected] wrote:

ha. using the correct branch helps ;-)

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[viktorbahr]

Hi shreepads,

I also experience problems with the multithreading.
I'm on 'baseopenmp' branch running the following command:
./pdfcrack -t 4 -o -f ~/test.pdf
I've attached the output as a text file: output.txt
Now, whats confusing for me is that when I run the make testall command it achieves w/s rates of over 500000, so multithreading seems to work...

Hope this helps a little,
best regards,
V.

[shreepads]

Viktor I've only implemented multi threading for the new pattern option
while leaving the existing methods untouched.

The pattern can cover anything that could be done with the existing options
including variable length and char types.

Shreepad

On 22-Nov-2016 12:30 AM, "Viktor Bahr" [email protected] wrote:

Hi shreepads,

I also experience problems with the multithreading.
I'm on 'baseopenmp' branch running the following command:
./pdfcrack -t 4 -o -f ~/test.pdf
I've attached the output as a text file: output.txt
https://github.com/shreepads/pdfcrack-mp/files/604511/output.txt
Now, whats confusing for me is that when I run the make testall command
it achieves w/s rates of over 500000, so multithreading seems to work...

Hope this helps a little,
best regards,
V.

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[viktorbahr]

Thanks for the clarification and sorry for the confusion!
Using pattern mode, multithreading works fine for me.

Cheers,
V.

[shreepads]

Am closing this issue. Multi-threading will not work if

• You don't switch to the baseopenmp branch
• You don't use the new pattern method