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{ "id": 702, "url": "http://patches.dpdk.org/api/covers/702/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/cover/20240227174203.2889333-1-yoan.picchi@arm.com/", "project": { "id": 1, "url": "http://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20240227174203.2889333-1-yoan.picchi@arm.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20240227174203.2889333-1-yoan.picchi@arm.com", "date": "2024-02-27T17:41:59", "name": "[v5,0/4] hash: add SVE support for bulk key lookup", "submitter": { "id": 3196, "url": "http://patches.dpdk.org/api/people/3196/?format=api", "name": "Yoan Picchi", "email": "yoan.picchi@arm.com" }, "mbox": "http://patches.dpdk.org/project/dpdk/cover/20240227174203.2889333-1-yoan.picchi@arm.com/mbox/", "series": [ { "id": 31254, "url": "http://patches.dpdk.org/api/series/31254/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=31254", "date": "2024-02-27T17:42:01", "name": "hash: add SVE support for bulk key lookup", "version": 5, "mbox": "http://patches.dpdk.org/series/31254/mbox/" } ], "comments": "http://patches.dpdk.org/api/covers/702/comments/", "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 6DB4543C0D;\n\tTue, 27 Feb 2024 18:42:25 +0100 (CET)", "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id EF18242ECB;\n\tTue, 27 Feb 2024 18:42:19 +0100 (CET)", "from foss.arm.com (foss.arm.com [217.140.110.172])\n by mails.dpdk.org (Postfix) with ESMTP id 837BE4069D\n for <dev@dpdk.org>; Tue, 27 Feb 2024 18:42:17 +0100 (CET)", "from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14])\n by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 975DB1476;\n Tue, 27 Feb 2024 09:42:53 -0800 (PST)", "from octeon10-1.usa.Arm.com (unknown [10.118.91.161])\n by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 95C313F7F4;\n Tue, 27 Feb 2024 09:42:14 -0800 (PST)" ], "From": "Yoan Picchi <yoan.picchi@arm.com>", "To": "", "Cc": "dev@dpdk.org,\n\tnd@arm.com,\n\tYoan Picchi <yoan.picchi@foss.arm.com>", "Subject": "[PATCH v5 0/4] hash: add SVE support for bulk key lookup", "Date": "Tue, 27 Feb 2024 17:41:59 +0000", "Message-Id": "<20240227174203.2889333-1-yoan.picchi@arm.com>", "X-Mailer": "git-send-email 2.25.1", "In-Reply-To": "<20231020165159.1649282-1-yoan.picchi@arm.com>", "References": "<20231020165159.1649282-1-yoan.picchi@arm.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org" }, "content": "From: Yoan Picchi <yoan.picchi@foss.arm.com>\n\nThis patchset adds SVE support for the signature comparison in the cuckoo\nhash lookup and improves the existing NEON implementation. These\noptimizations required changes to the data format and signature of the\nrelevant functions to support dense hitmasks (no padding) and having the\nprimary and secondary hitmasks interleaved instead of being in their own\narray each.\n\nBenchmarking the cuckoo hash perf test, I observed this effect on speed:\n There are no significant changes on Intel (ran on Sapphire Rapids)\n Neon is up to 7-10% faster (ran on ampere altra)\n 128b SVE is about 3-5% slower than the optimized neon (ran on a graviton\n 3 cloud instance)\n 256b SVE is about 0-3% slower than the optimized neon (ran on a graviton\n 3 cloud instance)\n\nV2->V3:\n Remove a redundant if in the test\n Change a couple int to uint16_t in compare_signatures_dense\n Several codding-style fix\n\nV3->V4:\n Rebase\n\nV4->V5:\n Commit message\n\nYoan Picchi (4):\n hash: pack the hitmask for hash in bulk lookup\n hash: optimize compare signature for NEON\n test/hash: check bulk lookup of keys after collision\n hash: add SVE support for bulk key lookup\n\n .mailmap | 2 +\n app/test/test_hash.c | 99 ++++++++++----\n lib/hash/rte_cuckoo_hash.c | 264 +++++++++++++++++++++++++++++--------\n lib/hash/rte_cuckoo_hash.h | 1 +\n 4 files changed, 287 insertions(+), 79 deletions(-)" }