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omdcct's Introduction

#OMDCCT

This is a BURST coin plotter that generates optimized plot files
without the need to run an optimizer after plotting.

This plotter ONLY works on Linux as it uses the fallocate() system
call to pre-allocate space in the file system to minimize fragmentation.

This version was developed by:
Author: Peter Kristolaitis [email protected]
Donations: BURST-WQ52-PUBY-N9WB-6J3DY

This code has a long lineage, and is a fork of the mdcct project by Mirkic7

Contributors in the lineage include:

Author: Mirkic7 [email protected]
Donations: BURST-RQW7-3HNW-627D-3GAEV

Author: Niksa Franceschi [email protected]
Donations: BURST-RQW7-3HNW-627D-3GAEV

Author: dcct / Markus Tervooren [email protected]
Donations: BURST-R5LP-KEL9-UYLG-GFG6T

Author: Cerr Janror [email protected]
Donations: BURST-LNVN-5M4L-S9KP-H5AAC

Installing

git clone https://github.com/alter3d/omdcct
cd omdcct
make

Usage

Notes
The file name will have a '.plotting' suffix while the file is incomplete, and then renamed to the
standard format if plotting is successful.
For SSE4
Usage:
./plot -k KEY [ -x CORE ] [-d DIRECTORY] [-s STARTNONCE] [-n NONCES] [-m STAGGERSIZE] [-t THREADS] [-a]
 CORE:
   0 - default core
   1 - SSE4 core
 -a = ASYNC writer mode (will use 2x memory!)
For AVX2
Usage:
./plotavx2 -k KEY [ -x CORE ] [-d DIRECTORY] [-s STARTNONCE] [-n NONCES] [-m STAGGERSIZE] [-t THREADS] [-a]
  CORE:
    0 - default core
    1 - SSE4 core
    2 - AVX2 core
   -a = ASYNC writer mode (will use 2x memory!)
Not specifying -x option will default to original dcct ploter

omdcct's People

Contributors

alter3d avatar kristian-popov avatar mirkic7 avatar notlesh avatar reversteam avatar

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omdcct's Issues

File pre-allocation fails

I have moved 2 plot files (419 GB each) off a SATA drive to make room to plot more. So, I know there is sufficient space.

When I try to plot 1600 nonces (4 GB) I get the error

File pre-allocation failed.
The *.plotting files are created with size 0.

Plotting 160 nonces works.

Linux Mint 32 bit, omdcct running sse core.

feature: optional pre-allocation

Pre-allocation may be useless

  • When file system is exclusively used by one application
  • On certain file systems

Please consider making pre-allocation optional.

Thanks.

Restore optimizer?

Good evening!
There's not many optimizers available for Linux, I need one for use with GPU plotter.
I plan to restore optimizer and improve it (found few potential buffer overruns). What about pulling these changes here?

Regards,
Kristian Popov

Buffer overflow

I just created a ~250Gb Plot.
It goes from 0 to 958464.

Now I want to create a new Plot from 958465 to 1912321.
It should be again ~250Gb

./plot -k xxx -x 1 -d xxx -m 512 -t 8 -n 953674 -s 958465

When I run it like that I get an Buffer overflow error and the Program is crashing

Any Ideas?

POC2

Hi guys,

Does this plotter does create POC2 files?

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