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Configuration guidelines (#59)

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* added detailed guidelines for the selection of configuration values
* added additional compile-time checks to prevent bad configurations
* removed RANDOMX_SUPERSCALAR_MAX_SIZE parameter
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tevador 2019-06-10 15:57:36 +02:00 • committed by GitHub
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doc/specs.md
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@ -62,7 +62,6 @@ RandomX has several configurable parameters that are listed in Table 1.2.1 with
|`RANDOMX_ARGON_SALT`|Argon2 salt|`"RandomX\x03"`|
|`RANDOMX_CACHE_ACCESSES`|The number of random Cache accesses per Dataset item|`8`|
|`RANDOMX_SUPERSCALAR_LATENCY`|Target latency for SuperscalarHash (in cycles of the reference CPU)|`170`|
|`RANDOMX_SUPERSCALAR_MAX_SIZE`|The maximum number of instructions of SuperscalarHash|`512`|
|`RANDOMX_DATASET_BASE_SIZE`|Dataset base size in bytes|`2147483648`|
|`RANDOMX_DATASET_EXTRA_SIZE`|Dataset extra size in bytes|`33554368`|
|`RANDOMX_PROGRAM_SIZE`|The number of instructions in a RandomX program|`256`|
@ -786,7 +785,7 @@ SuperscalarHash programs are generated to maximize the usage of all 3 execution
Program generation is complete when one of two conditions is met:
1. An instruction is scheduled for execution on cycle that is equal to or greater than `RANDOMX_SUPERSCALAR_LATENCY`
1. The number of generated instructions reaches `RANDOMX_SUPERSCALAR_MAX_SIZE`
1. The number of generated instructions reaches `3 * RANDOMX_SUPERSCALAR_LATENCY + 2`.
#### 6.3.1 Decoding stage