Release note of version 1.3.2.0
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Yutaka-Sawada
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README.md
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README.md
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# MultiPar
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v1.3.1.9 is public
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v1.3.2.0 is public
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This is the final release of v1.3.1 tree.
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There would be no serious problem.
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While I fixed some rare bugs and improved a bit, it's hard to test all possible cases.
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When you see a bug, odd incident, or strange behavior, please let me know.
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I will fix as possible as I can.
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This is a beta version to test new encoder & decoder.
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I implemented a way of Cache Blocking for CPU's L3 cache optimization.
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It will calculate multiple blocks at once on multi-Core CPU.
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Old method calculated each block independently,
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and could not avail the advantage of shared memory.
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New method may use shared L3 cache more often, and will be fast on recent PCs.
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I tested verification of multiple source files on my new PC.
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From the result, I set max number of threads for NVMe SSD to 4 threads,
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when CPU has 6 or more logical cores.
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This will improve speed at verifying complete source files.
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(It doesn't affect for PAR files nor damaged files.)
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SATA SSD : It will verify max 2 files at once.
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NVMe SSD : It will verify max 3 or 4 files at once.
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Thanks [prdp19 and Slava46](https://github.com/Yutaka-Sawada/MultiPar/issues/47) for many tests.
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Thanks [Anime Tosho](https://github.com/Yutaka-Sawada/MultiPar/issues/21) for some idea and advice.
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Also, other users aided my development.
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Without their help, I could not perform this speed improvement.
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When many input file slices are same, their checksums become same, too.
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There was a bug in my sorting function.
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Nobody found the error for over than 10 years, and I solved this problem at last.
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Thanks [NilEinne](https://github.com/Yutaka-Sawada/MultiPar/issues/36) for reporting the very rare incident.
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While new version seems to be faster on most cases,
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it may happen to be slow for a few blocks.
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Though I don't know the speed on old PCs, it may not become slow.
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If you see a failure or strange result, please report the incident with ease.
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I will try to solve as possible as I can.
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When a file includes duplicated data, it's difficult to find slices in proper position.
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In old versions, it might ignore overlap of slices for speed.
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Then, it happend to fail finding some slices.
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I implemented more complex method, and it will work well in most cases.
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Thanks [swarup459](https://github.com/Yutaka-Sawada/MultiPar/issues/42) for bug report, offering samples, and many tests.
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I adjusted CPU usage slider for CPUs with many Cores.
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Now, each position will set different number of threads always.
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Left most : 1/4 of CPU cores
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One from left : 2/4 of CPU cores
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Middle : 3/4 of CPU cores
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One from right : 4/4 of CPU cores, or use one less threads on CPU with 6 or more Cores.
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Right most : May use one more threads on CPU with 5 or less Cores.
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It's possible to add PAR2 recovery record to a ZIP file.
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When I wrote the instructions ago, 4 GB over ZIP file was not common so much.
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Because recent Windows OS supports ZIP64 format, I updated the text for compatibility.
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You may read the "Add recovery record" page of MultiPar's Help documents.
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Or, you may read [the article on my web-site](http://hp.vector.co.jp/authors/VA021385/record.htm).
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Now, MultiPar supports large ZIP file with ZIP64 format.
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Thanks [Dwaine Gonyier](https://github.com/Yutaka-Sawada/MultiPar/issues/44) for noticing the potential problem.
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I improved calculating hash of multiple source files.
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From my testing result, I changed default number of threads for NVMe SSD.
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When you use a raid-system or external drive, it cannot detect the drive type.
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If it fails to detect, it uses HDD mode by default.
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At MultiPar options, it's possible to change the setting manually.
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You may select one of them; HDD, SSD, or Fast SSD.
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Caution, you should not select SSD, if your using drive is HDD.
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[ Changes from 1.3.1.8 to 1.3.1.9 ]
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Installer update
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- Inno Setup was updated from v6.1.2 to v6.2.0.
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[ Changes from 1.3.1.9 to 1.3.2.0 ]
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GUI update
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- Change
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- Clickable link to access author's page becomes SSL.
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- Appending recovery record supports 2 GB over file size.
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- Fast SSD is selectable as file access mode.
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- Max number of log files was increased from 100 to 1000.
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- CPU usage slider was adjusted on CPU with 6 or more Cores.
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- Shadow of text over progress-bar becomes more smooth.
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PAR2 clients update
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PAR2 client update
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- Change
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- When source files are on NVMe SSD, verification may become faster.
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- Appending recovery record supports ZIP64 format.
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- Standard buffer size becomes double to decrease iteration.
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- Single byte error in a single slice file may be corrected.
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- Number of using threads was changed on CPU with 6 or more Cores.
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- Enabling GPU won't use additional threads on multi-core CPU.
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- Progress percent may move while writing blocks.
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- Improvement
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- Simple verification will find a short slice in a tiny file.
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- Bug fix
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- A stack overflow problem in quick sort function was removed.
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- A bug of searching slices in a file with repeated content was fixed.
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- L3 cache optimization was implemented for multi-core CPU.
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[ Hash value ]
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MultiPar131.zip
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MD5: EF3486BB39724EF6A4109F5B02D4E027
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SHA1: D935BFAFF5156C9460FB45639271339D1068F522
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MultiPar1320.zip
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MD5: 56524875BC77FD7A4E51A9E2C3F834CB
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SHA1: 245F3432DBCCAD335AEB2A70371EE57EFEF52CE7
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MultiPar131_setup.exe
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MD5: E2F6EF68AEB9BE0CCDD4D5ABF2A3F318
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SHA1: C2615960B9B28223BC174FC1175CAAECCC8A713A
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MultiPar1320_setup.exe
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MD5: 5D0A51F48CDE8FCB0B87CC949BE84DD1
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SHA1: B727D5193697E8C0A2335DB8233874CBDAFDEE40
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To install under "Program Files" or "Program Files (x86)" directory,
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you must start the installer with administrative privileges by selecting
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"Run as administrator" on right-click menu.
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@@ -78,9 +77,9 @@ you must start the installer with administrative privileges by selecting
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[GitHub](https://github.com/Yutaka-Sawada/MultiPar/releases) or
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[OneDrive](https://1drv.ms/u/s!AtGhNMUyvbWOaSo1n_R8awJ_hg0?e=4V0gXu).
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MultiPar_par2j_1319.7z
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MD5: 9AC4C38762E2DBF64D6D3A738CD7CCD6
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SHA1: FFC0DA1A0BBCAD08489C5499154DAA0216E10F51
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MultiPar_par2j_1320.7z
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MD5: 5DBF880047D05BC2E8FE349DC6EC610C
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SHA1: 1D50EFE97A7812B6AF0090B83AAEE61BCBABD1ED
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MultiPar_par1j_1318.7z
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MD5: F66285403BA0AD856BA6A8CCD922EBF5
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@@ -90,14 +89,14 @@ MultiPar_sfv_md5_1318.7z
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MD5: 4E6433808625C088E2773C961BBEBBD2
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SHA1: 68B54D178BA58637F63CC3E0CC656C96D4472A33
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MultiPar_ShlExt_1318.7z
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MD5: 57E79698A53458681CD19842391A202F
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SHA1: 646145F1B429C1CF592F907614889C98FBE7E756
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MultiPar_ShlExt_1320.7z
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MD5: C413655ABF85BCFF3D4B349BAAADC24B
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SHA1: 8552E6CCF647B065D91E494D2751567C144ABD36
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MultiPar_ResUI_1319.7z
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MD5: E03B90A433466C945D726B5A49B4E547
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SHA1: E30FB11B8F121D44CC1CC368E8D91F06CFC15551
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MultiPar_Help_1319.7z
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MD5: 37547FA074DC24491D1696F6F0DB7452
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SHA1: 8069C5745F9C7660236F17E3E087B4F7324382ED
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MultiPar_Help_1320.7z
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MD5: 1F8CC009B1A5F11EFBA999C7225E4311
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SHA1: 6E392602F82A96E3015FEA65A590E08D2B6E39CB
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