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The files in this folder are used to override autotune settings
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You can override configuration settings for Vector-Width, Kernel-Accel and/or Kernel-Loops values
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You can filter by Device-Name, Device-Name alias, Attack-Mode and/or Hash-Type
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Each file in this folder with the filename suffix .hctune will be automatically loaded by hashcat on startup with random order
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- A valid line consists of the following fields (in that order):
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- Device-Name
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- Attack-Mode
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- Hash-Type
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- Vector-Width
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- Kernel-Accel
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- Kernel-Loops
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- The first three columns define the filter, the other three is what is assigned when that filter matches
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- If no filter matches, autotune is used
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- Columns are separated with one or many spaces or tabs
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- A line can not start with a space or a tab
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- Comment lines are allowed, use a # as first character
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- Invalid lines are ignored
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- The Device-Name is the OpenCL Device-Name. It's shown on hashcat startup.
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- If the device contains spaces, replace all spaces with _ character.
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- Device Names prefixed with 'NVIDIA' will be matched with or without 'NVIDIA' present in the alias. e.g. 'NVIDIA_Tesla_T4' vs 'Tesla_T4'
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- The Device-Name can be assigned an alias. This is useful if many devices share the same chip
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- If you assign an alias, make sure to not use the devices name directly
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- There's also a hard-wired Device-Name which matches all device types called:
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- DEVICE_TYPE_CPU
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- DEVICE_TYPE_GPU
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- DEVICE_TYPE_ACCELERATOR
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- The use of wildcards is allowed, some rules:
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- Wildcards can only replace an entire Device-Name, not parts just of it. eg: not Geforce_*
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- The policy is local > global, means the closer you configure something, the more likely it is selected
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- The policy testing order is from left to right
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- Attack modes can be:
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- 0 = Dictionary-Attack
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- 1 = Combinator-Attack, will also be used for attack-mode 6 and 7 since they share the same kernel
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- 3 = Mask-Attack
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- The Kernel-Accel is a multiplier to OpenCL's concept of a workitem, not the workitem count
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- The Kernel-Loops has a functionality depending on the hash-type:
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- Slow Hash: Number of iterations calculated per workitem
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- Fast Hash: Number of mutations calculated per workitem
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- None of both should be confused with the OpenCL concept of a "thread", this one is maintained automatically
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- The Vector-Width can have only the values 1, 2, 4, 8 or 'N', where 'N' stands for native, which is an OpenCl-queried data value
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- The Kernel-Accel is limited to 1024
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- The Kernel-Loops is limited to 1024
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- The Kernel-Accel can have 'A', where 'A' stands for autotune
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- The Kernel-Accel can have 'M', where 'M' stands for maximum possible
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- The Kernel-Loops can have 'A', where 'A' stands for autotune
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- The Kernel-Loops can have 'M', where 'M' stands for maximum possible
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