Changed CPU threads format.

doc/CPU.md

@@ -1,5 +1,7 @@
 # CPU backend
 
+**Information in this document actual to version 2.99.5+**
+
 All CPU related settings contains in one `cpu` object in config file, CPU backend allow specify multiple profiles and allow switch between them without restrictions by pool request or config change. Default auto-configuration create reasonable minimum of profiles which cover all supported algorithms.
 
 ### Example
@@ -9,7 +11,7 @@ Example below demonstrate all primary ideas of flexible profiles configuration:
 * `"rx/wow"` Exact match to algorithm `rx/wow`, defined 4 threads without CPU affinity.
 * `"cn"` Default failback profile for all `cn/*` algorithms, defined 2 threads with CPU affinity, another failback profiles is `cn-lite`, `cn-heavy` and `rx`.
 * `"cn-lite"` Default failback profile for all `cn-lite/*` algorithms, defined 2 double threads with CPU affinity.
-* `"cn-pico"` Alternative short object format, since 2.99.5.
+* `"cn-pico"` Alternative short object format.
 * `"custom-profile"` Custom user defined profile.
 * `"*"` Failback profile for all unhandled by other profiles algorithms.
 * `"cn/r"` Exact match, alias to profile `custom-profile`.
@@ -24,16 +26,13 @@ Example below demonstrate all primary ideas of flexible profiles configuration:
         "priority": null,
         "asm": true,
         "rx/wow": [-1, -1, -1, -1],
-        "cn": [0, 2],
+        "cn": [
+            [1, 0],
+            [1, 2]
+        ],
         "cn-lite": [
-            {
-                "intensity": 2,
-                "affinity": 0
-            },
-            {
-                "intensity": 2,
-                "affinity": 2
-            }
+            [2, 0],
+            [2, 2]
         ],
         "cn-pico": {
             "intensity": 2,
@@ -48,8 +47,35 @@ Example below demonstrate all primary ideas of flexible profiles configuration:
 }
 ```
 
-### Intensity
-This option was known as `low_power_mode`, possible values is range from 1 to 5, for convinient if value 1 used, possible omit this option and specify CPU thread config by only one number: CPU affinity, instead of object.
+## Threads definition
+Threads can be defined in 3 formats.
+
+#### Array format
+```json
+[
+    [1, 0],
+    [1, 2],
+    [1, -1],
+    [2, -1]
+]
+```
+Each line represent one thread, first element is intensity, this option was known as `low_power_mode`, possible values is range from 1 to 5, second element is CPU affinity, special value `-1` means no affinity.
+
+#### Short array format
+```json
+[-1, -1, -1, -1]
+```
+Each number represent one thread and means CPU affinity, this is default format for algorithm with maximum intensity 1, currently it all RandomX variants and cryptonight-gpu.
+
+#### Short object format
+```json
+{
+    "intensity": 2,
+    "threads": 8,
+    "affinity": -1
+}
+```
+Internal format, but can be user defined.
 
 ## Shared options