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c87a87f992
General: The logic for calculating the SCRYPT workload has been moved from module_extra_buffer_size() to module_extra_tuningdb_block(). Previously, this function just returned values from a static tuning file. Now, it actually computes tuning values on the fly based on the device's resources and SCRYPT parameters. This was always possible, it just wasn't used that way until now. After running the calculation, the calculated kernel_accel value is injected into the tuning database as if it had come from a file. The tmto value is stored internally. Users can still override kernel-threads, kernel-accel, and scrypt-tmto via the command line or via tuningdb file. module_extra_tuningdb_block(): This is now where kernel_accel and tmto are automatically calculated. The logic for accel and tmto is now separated and more flexible. Whether the user is using defaults, tuningdb entries, or manual command line overrides, the code logic will try to make smart choices based on what's actually available on the device. First, it tries to find a kernel_accel value that fits into available memory. It starts with a base value and simulates tmto=1 or 2 (which is typical good on GPU). It also leaves room for other buffers (like pws[], tmps[], etc.). If the result is close to the actual processor count, it gets clamped. This value is then added to the tuning database, so hashcat can pick it up during startup. Once that's set, it derives tmto using available memory, thread count, and the actual SCRYPT parameters. module_extra_buffer_size(): This function now just returns the size of the SCRYPT B[] buffer, based on the tmto that was already calculated. kernel_threads: Defaults are now set to 32 threads in most cases. On AMD GPUs, 64 threads might give a slight performance bump, but 32 is more consistent and reliable. For very memory-heavy algorithms (like Ethereum Wallet), it scales down the thread count. Here's a rough reference for other SCRYPT-based modes: - 64 MiB: 16 threads - 256 MiB: 4 threads Tuning files: All built-in tuningdb entries have been removed, because they shouldn’t be needed anymore. But you can still add custom entries if needed. There’s even a commented-out example in the tuningdb file for mode 22700. Free memory handling: Getting the actual amount of free GPU memory is critical for this to work right. Unfortunately, none of the common GPGPU APIs give reliable numbers. We now query low-level interfaces like SYSFS (AMD) and NVML (NVIDIA). Support for those APIs is in place already, except for ADL, which still needs to be added. Because of this, hwmon support (which handles those low-level queries) can no longer be disabled.
24 lines
707 B
C
24 lines
707 B
C
/**
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* Author......: See docs/credits.txt
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* License.....: MIT
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*/
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#ifndef HC_TUNINGDB_H
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#define HC_TUNINGDB_H
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#include <stdio.h>
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#include <errno.h>
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#define TUNING_DB_SUFFIX "hctune"
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int sort_by_tuning_db_alias (const void *v1, const void *v2);
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int sort_by_tuning_db_entry (const void *v1, const void *v2);
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int tuning_db_init (hashcat_ctx_t *hashcat_ctx);
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void tuning_db_destroy (hashcat_ctx_t *hashcat_ctx);
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bool tuning_db_process_line (hashcat_ctx_t *hashcat_ctx, const char *line_buf, const int line_num);
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tuning_db_entry_t *tuning_db_search (hashcat_ctx_t *hashcat_ctx, const char *device_name, const cl_device_type device_type, int attack_mode, const int hash_mode);
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#endif // HC_TUNINGDB_H
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