Differences

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--- doublecheck [2023/11/08 13:31] – [Preliminary double-check done already] mino
+++ doublecheck [2024/05/13 18:10] (current) – [The thorough double-check in progress] mino
@@ Line 8: / Line 8: @@
 ==== The thorough double-check in progress ====
-If every subtotal is calculated twice and the two results match, the counts should be considered correct (provided the code is correct). The re-counting is in progress and has been done up to 10% as of 2023/11/07.
+If every subtotal is calculated twice and the two results match, the counts should be considered correct (provided the code is correct). The re-counting is in progress and is 70% completed as of 2024/05/12.
-==== Errors Found (updated on 2023.09.07) ====
+==== Errors Found  ====
-During the thorough double-check, it was discovered that a portion of the results generated by an instance was incorrect. The instance ran with two RTX-4090s for 60 hours and generated 3,771 sub-subtotals. Out of the 3,771 sub-subtotals only 12 was incorrect and all incorrect results were generated by only one of the two RTX-4090s. It is unlikely that these errors are due to logical flaws or coding mistakes. Hardware defects or instability are the most probable causes.
+=== updated on 2024.02.17 ===
-Correcting these errors increased the number by 960(40x24).
+Another erroneous instance was found. It ran with an RTX-4090 for about one month and produced about 19,000 sub-subtotals. Out of those sub-subtotals 6 were incorrect. All of the incorrect results were produced in the last one hour of the lifetime of the instance. After the erroneous behavior, the GPU of the instance became unusable with an error message of "invalid memory access".
-While these errors have not damaged my confidence in the logic and the code I used, it is possible that errors of similar nature may still be contained in the result. Therefore, the results should be considered unconfirmed until the thorough double-check is completed.
+As the result of the correction, the number increased by 7 959 250 368 (331 635 432 x24).
+=== updated on 2023.09.07 ===
+During the thorough double-check, it was discovered that a portion of the results generated by an instance was incorrect. The instance ran with two RTX-4090s for 60 hours and generated 3,771 sub-subtotals. Out of those sub-subtotals only 12 were incorrect and all incorrect results were generated by only one of the two RTX-4090s. It is unlikely that these errors are due to logical flaws or coding mistakes. Hardware defects or instability are the most probable causes.
+As the result of the correction, the number increased by 960(40x24).
+While these errors have not damaged my confidence in the logic and the code used in the calculation, it is possible that errors of similar nature may still be contained in the result. Therefore, the results should be considered unconfirmed until the thorough double-check is completed.