From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id C985743C03; Tue, 27 Feb 2024 07:03:19 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 581FA42EB4; Tue, 27 Feb 2024 07:02:39 +0100 (CET) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mails.dpdk.org (Postfix) with ESMTP id 8DC4940144 for ; Mon, 26 Feb 2024 18:02:23 +0100 (CET) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 50CAEDA7; Mon, 26 Feb 2024 09:03:01 -0800 (PST) Received: from octeon10-1.usa.Arm.com (unknown [10.118.91.161]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 927823F73F; Mon, 26 Feb 2024 09:02:22 -0800 (PST) From: Yoan Picchi To: Cc: dev@dpdk.org, nd@arm.com, Yoan Picchi Subject: [PATCH v4 0/4] hash: add SVE support for bulk key lookup Date: Mon, 26 Feb 2024 17:01:59 +0000 Message-Id: <20240226170203.2881280-1-yoan.picchi@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231107121845.2758454-1-yoan.picchi@arm.com> References: <20231107121845.2758454-1-yoan.picchi@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Tue, 27 Feb 2024 07:02:24 +0100 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org This patchset adds SVE support for the signature comparison in the cuckoo hash lookup and improves the existing NEON implementation. These optimizations required changes to the data format and signature of the relevant functions to support dense hitmasks (no padding) and having the primary and secondary hitmasks interleaved instead of being in their own array each. Benchmarking the cuckoo hash perf test, I observed this effect on speed: There are no significant changes on Intel (ran on Sapphire Rapids) Neon is up to 7-10% faster (ran on ampere altra) 128b SVE is about 3-5% slower than the optimized neon (ran on a graviton 3 cloud instance) 256b SVE is about 0-3% slower than the optimized neon (ran on a graviton 3 cloud instance) V2->V3: Remove a redundant if in the test Change a couple int to uint16_t in compare_signatures_dense Several codding-style fix V3->V4: Rebase Yoan Picchi (4): hash: pack the hitmask for hash in bulk lookup hash: optimize compare signature for NEON test/hash: check bulk lookup of keys after collision hash: add SVE support for bulk key lookup .mailmap | 2 + app/test/test_hash.c | 99 ++++++++++---- lib/hash/rte_cuckoo_hash.c | 264 +++++++++++++++++++++++++++++-------- lib/hash/rte_cuckoo_hash.h | 1 + 4 files changed, 287 insertions(+), 79 deletions(-) -- 2.25.1