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{ "id": 767, "url": "http://patches.dpdk.org/api/covers/767/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/cover/20240312154215.802374-1-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": "<20240312154215.802374-1-yoan.picchi@arm.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20240312154215.802374-1-yoan.picchi@arm.com", "date": "2024-03-12T15:42:11", "name": "[v7,0/4] 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/20240312154215.802374-1-yoan.picchi@arm.com/mbox/", "series": [ { "id": 31481, "url": "http://patches.dpdk.org/api/series/31481/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=31481", "date": "2024-03-12T15:42:11", "name": "hash: add SVE support for bulk key lookup", "version": 7, "mbox": "http://patches.dpdk.org/series/31481/mbox/" } ], "comments": "http://patches.dpdk.org/api/covers/767/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 A215043C93;\n\tTue, 12 Mar 2024 16:42:31 +0100 (CET)", "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 6AB7340ED9;\n\tTue, 12 Mar 2024 16:42:31 +0100 (CET)", "from foss.arm.com (foss.arm.com [217.140.110.172])\n by mails.dpdk.org (Postfix) with ESMTP id E7421402D8\n for <dev@dpdk.org>; Tue, 12 Mar 2024 16:42:29 +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 8A8E21007;\n Tue, 12 Mar 2024 08:43:06 -0700 (PDT)", "from octeon10-1.usa.Arm.com (unknown [10.118.91.161])\n by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 516A63F762;\n Tue, 12 Mar 2024 08:42:29 -0700 (PDT)" ], "From": "Yoan Picchi <yoan.picchi@arm.com>", "To": "", "Cc": "dev@dpdk.org,\n\tnd@arm.com,\n\tYoan Picchi <yoan.picchi@arm.com>", "Subject": "[PATCH v7 0/4] hash: add SVE support for bulk key lookup", "Date": "Tue, 12 Mar 2024 15:42:11 +0000", "Message-Id": "<20240312154215.802374-1-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": "This 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\nV5->V6:\n Move the arch-specific code into new arch-specific files\n Isolate the data struture refactor from adding SVE\n\nV6->V7:\n Commit message\n Moved RTE_HASH_COMPARE_SVE to the last commit of the chain\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/arch/arm/compare_signatures.h | 117 +++++++++++++\n lib/hash/arch/common/compare_signatures.h | 38 +++++\n lib/hash/arch/x86/compare_signatures.h | 53 ++++++\n lib/hash/rte_cuckoo_hash.c | 199 ++++++++++++----------\n lib/hash/rte_cuckoo_hash.h | 1 +\n 7 files changed, 394 insertions(+), 115 deletions(-)\n create mode 100644 lib/hash/arch/arm/compare_signatures.h\n create mode 100644 lib/hash/arch/common/compare_signatures.h\n create mode 100644 lib/hash/arch/x86/compare_signatures.h" }