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{
    "id": 369,
    "url": "http://patchwork.dpdk.org/api/covers/369/?format=api",
    "web_url": "http://patchwork.dpdk.org/project/dpdk/cover/20231107121845.2758454-1-yoan.picchi@arm.com/",
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    "msgid": "<20231107121845.2758454-1-yoan.picchi@arm.com>",
    "list_archive_url": "https://inbox.dpdk.org/dev/20231107121845.2758454-1-yoan.picchi@arm.com",
    "date": "2023-11-07T12:18:41",
    "name": "[v3,0/4] hash: add SVE support for bulk key lookup",
    "submitter": {
        "id": 3196,
        "url": "http://patchwork.dpdk.org/api/people/3196/?format=api",
        "name": "Yoan Picchi",
        "email": "yoan.picchi@arm.com"
    },
    "mbox": "http://patchwork.dpdk.org/project/dpdk/cover/20231107121845.2758454-1-yoan.picchi@arm.com/mbox/",
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            "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=30183",
            "date": "2023-11-07T12:18:41",
            "name": "hash: add SVE support for bulk key lookup",
            "version": 3,
            "mbox": "http://patchwork.dpdk.org/series/30183/mbox/"
        }
    ],
    "comments": "http://patchwork.dpdk.org/api/covers/369/comments/",
    "headers": {
        "Return-Path": "<dev-bounces@dpdk.org>",
        "X-Original-To": "patchwork@inbox.dpdk.org",
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        "Received": [
            "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id 51FBC432C7;\n\tTue,  7 Nov 2023 14:04:58 +0100 (CET)",
            "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id D4B56402E3;\n\tTue,  7 Nov 2023 14:04:57 +0100 (CET)",
            "from foss.arm.com (foss.arm.com [217.140.110.172])\n by mails.dpdk.org (Postfix) with ESMTP id 571E5402BC\n for <dev@dpdk.org>; Tue,  7 Nov 2023 13:19:00 +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 813CA13D5;\n Tue,  7 Nov 2023 04:19:44 -0800 (PST)",
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        ],
        "From": "Yoan Picchi <yoan.picchi@arm.com>",
        "To": "Thomas Monjalon <thomas@monjalon.net>,\n Yipeng Wang <yipeng1.wang@intel.com>,\n Sameh Gobriel <sameh.gobriel@intel.com>,\n Bruce Richardson <bruce.richardson@intel.com>,\n Vladimir Medvedkin <vladimir.medvedkin@intel.com>",
        "Cc": "Nathan Brown <nathan.brown@arm.com>, Ruifeng Wang <ruifeng.wang@arm.com>,\n dev@dpdk.org, Yoan Picchi <yoan.picchi@arm.com>",
        "Subject": "[PATCH v3 0/4] hash: add SVE support for bulk key lookup",
        "Date": "Tue,  7 Nov 2023 12:18:41 +0000",
        "Message-Id": "<20231107121845.2758454-1-yoan.picchi@arm.com>",
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        "X-Mailman-Approved-At": "Tue, 07 Nov 2023 14:04:56 +0100",
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        "List-Id": "DPDK patches and discussions <dev.dpdk.org>",
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        "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\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(-)"
}