From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=pass header.oldest-pass=0 smtp.remote-ip=40.93.194.64 ARC-Seal: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=pass; t=1792557047; b=xn1jINo9tXwiPibK13RROLw8LpZanaYxzmm7JwsIcdrP4ku+vfv9gCCuIyaF4/ZnpNu9 tQXdbZ6gxoYfEq/FMg2AQj3jFFgSgE4DrEA1LF6V3L+CWvGSztWZVRXELb616t/uuzSZH cNG82UN6DwlvcSaZUAU8humOO+vP1K6LYUFEXqOrDYqfrv1OhluzNnrdpN6TCrxIa1P2b BdtKqfOyJTR1pNjgvWa+/VQ16YtSAYMguev+BsPM5203lmjemPX8C+G5mNhLWLk0O0ZLL gL5ZFzBXnbaIfdp3SMV0hJfNWXxnIB2DVa9XypRjOc8k2C2UCZ+Ya1bn6q5IXPnzweg== ARC-Message-Signature: i=2; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792557047; h=DMARC-Filter:DKIM-Signature:Received:Received: X-MS-Exchange-Authentication-Results:Received-SPF:Received:Received: Received:Message-ID:Date:MIME-Version:User-Agent:Subject:To:CC: References:Content-Language:From:In-Reply-To:Content-Type: Content-Transfer-Encoding:X-EOPAttributedMessage: X-MS-PublicTrafficType:X-MS-TrafficTypeDiagnostic: X-MS-Office365-Filtering-Correlation-Id:X-MS-Exchange-SenderADCheck: X-MS-Exchange-AntiSpam-Relay:X-Microsoft-Antispam: X-Microsoft-Antispam-Message-Info:X-Forefront-Antispam-Report: X-MS-Exchange-AntiSpam-MessageData-ChunkCount: X-MS-Exchange-AntiSpam-MessageData-0:X-OriginatorOrg: X-MS-Exchange-CrossTenant-OriginalArrivalTime: X-MS-Exchange-CrossTenant-Network-Message-Id: X-MS-Exchange-CrossTenant-Id: X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: X-MS-Exchange-CrossTenant-AuthSource:X-MS-Exchange-CrossTenant-AuthAs: X-MS-Exchange-CrossTenant-FromEntityHeader: X-MS-Exchange-Transport-CrossTenantHeadersStamped; bh=n4k4Qj5XTRQZP3FclQeV5KNSHIGFhgCodpqRiin8YXU=; b=2LR/Prg4A/bbAuyiA33kYBz9XQ7lRjcZMPgP1riB7yx9e+X54FyhZxq4Ix8L8oRbVItX kpEsw1sr+0f/DQn01uxwl/5URPbUIjdjSW96jpqhJ22+zbK4SeYxva/lDTmvxUKPjv3AR MIRIc4gqSC7uuQ2sB0Naykx2OtPrGusaHrUCufAfpeXoqHYL7CSlzcMhn1Bcj/jRwiR1Q 4iON9WopYQtCeW+AS+PoSuvSrtFpBJTCZ2Aap996cNYLR85PRSFkoPpf+bJy04rk9zXpx QQgFhE/krGfBOHN2Dc3fk5v3Z6alyI1lVjW/Q2jKb1jGxbZjk7a9jzJpDhpsJOy4NLg== ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass header.d=amd.com header.i=@amd.com header.a=rsa-sha256 header.s=selector1 header.b="Yhsit/4I"; arc=pass header.oldest-pass=0 smtp.remote-ip=40.93.194.64 Received: from SN4PR0501CU005.outbound.protection.outlook.com (mail-southcentralusazon11011064.outbound.protection.outlook.com [40.93.194.64]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (secp384r1) server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3EA58606A319 for ; Wed, 21 Oct 2026 04:30:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 3EA58606A319 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=amd.com header.i=@amd.com header.a=rsa-sha256 header.s=selector1 header.b=Yhsit/4I ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=a4z7W/m38qscR0aN39AQlMabZoyX5EOl3O7mITKXovy1CwGGbFAKISsLCegJ94vxNCiEXzHpGI2SkVN4IZazULllKadSqlzEWdP8r5KzpvrDnEd8N0ahSbrSipNins/l+hBgC1HOLyQP1AvshsJAR8n53Y3Ypzr0OSsTVxXJMTBTFtJs813Ob3mh06WDHQ0ep2RUVQ4vABTSk4tLCOZm7S5jde9h0OeByfVLwgYqs9JV9XOl6DToBtc9+bbkiho6xSVnusgw6AI+xVLqqxcb+8TVbmTZekFhi7lsKi18TANAp+R3fqL67xWI2UIG1rfysfBS1NYYVBB/AqyfiWC6pA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=n4k4Qj5XTRQZP3FclQeV5KNSHIGFhgCodpqRiin8YXU=; b=fkPAHV9+16IZAwL32mqw6/0gX6AvX2b1zrZeayc1RSYMTHaO9jX+DmS9hqyWVHs1Avn3vs8YiyHFS5CUUuYqsR9YrEpwb6Nf5Kesb3Ps0vY7BZCseqzejsyEkW6NkfL64aD98c0luuznGZsY9Js2co5CF2AcuYH1M9FQDZ3jky0n8GZLkCZ5andOrJcziGt9t4RV5e4dMny0rAgg6A/tyKk695AlLGbJhsLt345fbM6eo/tE8bRi+qMVaCO3WvB2FKtTGHSgv3zTBAI9MJHj9Ck5AJ8Qa1IGOgRBbr/0XxR5ucA5s4O8ZXTt0xcod/A1ldV5R2VheoGAu8DMDxoylw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=huaweicloud.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=n4k4Qj5XTRQZP3FclQeV5KNSHIGFhgCodpqRiin8YXU=; b=Yhsit/4IQ0hWAjCDeKrhCdSiuVVR/+XJSgfS7DotdwZtubv1tQwXwVomKD/rbuzQ7LxM+zdijrBWx4KtFTZsMgsFojIoOlA30D/TWW9p5UBC04cR4p3t+9Yj95FaiwHcna5m6bJs46LLiAhYIatNJj9H9zgfVdpJUY6K1bwE9kM= Received: from SJ0PR05CA0018.namprd05.prod.outlook.com (2603:10b6:a03:33b::23) by CH2PR12MB4165.namprd12.prod.outlook.com (2603:10b6:610:a4::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.546.15; Wed, 21 Oct 2026 04:30:42 +0000 Received: from MWH0EPF000C618F.namprd02.prod.outlook.com (2603:10b6:a03:33b:cafe::4a) by SJ0PR05CA0018.outlook.office365.com (2603:10b6:a03:33b::23) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.546.15 via Frontend Transport; Wed, 21 Oct 2026 04:30:41 +0000 X-MS-Exchange-Authentication-Results: mx.microsoft.com 1; spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by MWH0EPF000C618F.mail.protection.outlook.com (10.167.249.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.546.15 via Frontend Transport; Wed, 21 Oct 2026 04:30:40 +0000 Received: from satlexmb08.amd.com (10.181.42.217) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.53; Tue, 20 Oct 2026 23:30:39 -0500 Received: from [10.136.41.43] (10.180.168.240) by satlexmb08.amd.com (10.181.42.217) with Microsoft SMTP Server id 15.2.2562.53 via Frontend Transport; Tue, 20 Oct 2026 23:30:34 -0500 Message-ID: <1e9259b5-0758-4387-a572-37e2d32c47c0@amd.com> Date: Wed, 21 Oct 2026 10:00:28 +0530 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v10 1/2] sched/cache: Reduce the overhead of task_cache_work by only scan the visisted cpus To: Luo Gengkun , , , , , , CC: , , , , , References: <20261009032943.95091-1-luogengkun@huaweicloud.com> <20261009032943.95091-2-luogengkun@huaweicloud.com> Content-Language: en-US From: K Prateek Nayak In-Reply-To: <20261009032943.95091-2-luogengkun@huaweicloud.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MWH0EPF000C618F:EE_|CH2PR12MB4165:EE_ X-MS-Office365-Filtering-Correlation-Id: d84e4f27-c60a-4033-3257-08df2f2c1036 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|82310400026|23010399003|1800799024|36860700016|4143699003|11063799006|56012099006|261009223027099003|10067099003|18002099003|22082099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(7416014)(376014)(82310400026)(23010399003)(1800799024)(36860700016)(4143699003)(11063799006)(56012099006)(261009223027099003)(10067099003)(18002099003)(22082099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 5vGe6EBRCCPp2DTwsKZbT2PgteAvcRejz5iqrSjKpHPQXKyOIFvwU/NE8n/z1dTeRApv/4HP3fe+bUvaw4DucaueC96cVPEPgIhq764HskH8r3OWYKbY9zInHSHojmFs2ADILx+ENe8sdJG9GV7f5ARa2hgV4U4x5u5QpvM4kjibe5cRyDGKa0ySqOSzqjWkrY1CUHngEjKI1l0fV7Cm8QAiD8ifDwYifIdL9IAaNN2Nz2c7/IHr13/GRPA/033ApG/JDEEdXdFt2yN7TxWWEA67WWTO8rjv1ETgZtV6KzMVfuWW/mOzQqay6eqvEf+A+OR5x4+thNgM4sEC9RYoVh/7KlQgePWkcntgPbGmpKUmG7JiZPgmNVY0JtVE8tr53lZ3Ngxna+nZpeiZymuEQXCxoExh/Re3FHLNr19MdP8o/VXhmwPVQC2U//NMKdxK X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Oct 2026 04:30:40.5526 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d84e4f27-c60a-4033-3257-08df2f2c1036 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: MWH0EPF000C618F.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB4165 Hello Luo, On 10/9/2026 8:59 AM, Luo Gengkun wrote: > The overhead of task_cache_work() is high, especially in multi-NUMA systems. > Currently, task_cache_work() tries to find the pref_llc by scanning all CPUs > in the system. However, most of these scans are meaningless, such as those > for CPUs that have never been visited or were accessed a long time ago. > > To address this problem, introduce visited_cpus to track the visited CPUs > and evict them once they have not been accessed for a duration exceeding > llc_epoch_affinity_timeout. > > Now that we know exactly which CPUs to scan from visited_cpus, we can remove > get_scan_cpumasks(). nit. Could you include the performance numbers from the cover letter in the commit message here to keep it around for the record. > > Signed-off-by: Luo Gengkun I gave it a spin on my 4th Generation EPYC system (2 x 128C/256T) and I could see small improvements and no regressions greater than the expected run to run variance. Feel free to include: Tested-by: K Prateek Nayak --- o Full benchmark results ================================================================== Test : hackbench Units : Normalized time in seconds Interpretation: Lower is better Statistic : AMean ================================================================== Case: tip[pct imp](CV) cpu-track[pct imp](CV) 1-groups 1.00 [ -0.00](14.00) 1.02 [ -1.98](11.49) 2-groups 1.00 [ -0.00]( 4.92) 0.91 [ 9.49](11.67) 4-groups 1.00 [ -0.00]( 2.01) 0.99 [ 0.51]( 2.98) 8-groups 1.00 [ -0.00]( 3.13) 1.02 [ -2.16]( 3.25) 16-groups 1.00 [ -0.00]( 1.52) 0.99 [ 1.03]( 0.83) ================================================================== Test : tbench Units : Normalized throughput Interpretation: Higher is better Statistic : AMean ================================================================== Clients: tip[pct imp](CV) cpu-track[pct imp](CV) 1 1.00 [ 0.00]( 0.27) 1.01 [ 0.81]( 0.62) 2 1.00 [ 0.00]( 0.22) 1.01 [ 1.01]( 0.70) 4 1.00 [ 0.00]( 0.36) 1.01 [ 0.65]( 0.13) 8 1.00 [ 0.00]( 0.23) 1.01 [ 1.15]( 0.41) 16 1.00 [ 0.00]( 0.17) 1.01 [ 1.04]( 0.17) 32 1.00 [ 0.00]( 0.16) 1.01 [ 0.95]( 0.12) 64 1.00 [ 0.00]( 0.16) 1.01 [ 0.64]( 0.21) 128 1.00 [ 0.00]( 0.04) 1.01 [ 0.83]( 0.40) 256 1.00 [ 0.00]( 0.14) 1.00 [ -0.05]( 0.25) 512 1.00 [ 0.00]( 0.25) 1.00 [ -0.12]( 0.63) 1024 1.00 [ 0.00]( 0.31) 1.00 [ 0.46]( 0.29) 2048 1.00 [ 0.00]( 0.41) 1.00 [ -0.20]( 0.49) ================================================================== Test : stream-10 Units : Normalized Bandwidth, MB/s Interpretation: Higher is better Statistic : HMean ================================================================== Test: tip[pct imp](CV) cpu-track[pct imp](CV) Copy 1.00 [ 0.00]( 0.33) 0.98 [ -2.41]( 3.81) Scale 1.00 [ 0.00]( 0.63) 0.98 [ -1.64]( 3.10) Add 1.00 [ 0.00]( 0.49) 0.98 [ -1.56]( 2.58) Triad 1.00 [ 0.00]( 0.46) 0.98 [ -1.87]( 2.66) ================================================================== Test : stream-100 Units : Normalized Bandwidth, MB/s Interpretation: Higher is better Statistic : HMean ================================================================== Test: tip[pct imp](CV) cpu-track[pct imp](CV) Copy 1.00 [ 0.00]( 0.42) 1.00 [ -0.50]( 1.43) Scale 1.00 [ 0.00]( 0.53) 0.99 [ -0.53]( 1.52) Add 1.00 [ 0.00]( 0.44) 0.99 [ -0.56]( 1.19) Triad 1.00 [ 0.00]( 0.44) 0.99 [ -0.54]( 1.23) ================================================================== Test : netperf Units : Normalized Througput Interpretation: Higher is better Statistic : AMean ================================================================== Clients: tip[pct imp](CV) cpu-track[pct imp](CV) 1-clients 1.00 [ 0.00]( 0.03) 1.01 [ 0.86]( 0.17) 2-clients 1.00 [ 0.00]( 0.16) 1.00 [ 0.47]( 0.31) 4-clients 1.00 [ 0.00]( 0.32) 1.00 [ 0.46]( 0.27) 8-clients 1.00 [ 0.00]( 0.45) 1.01 [ 0.55]( 0.26) 16-clients 1.00 [ 0.00]( 0.24) 1.01 [ 0.63]( 0.27) 32-clients 1.00 [ 0.00]( 0.76) 1.01 [ 0.76]( 0.69) 64-clients 1.00 [ 0.00]( 0.73) 1.01 [ 0.79]( 0.89) 128-clients 1.00 [ 0.00]( 0.97) 1.01 [ 0.53]( 1.28) 256-clients 1.00 [ 0.00]( 1.13) 1.01 [ 0.64]( 1.21) 512-clients 1.00 [ 0.00]( 2.23) 1.01 [ 0.57]( 1.74) 768-clients 1.00 [ 0.00](11.06) 1.00 [ 0.04](11.12) 1024-clients 1.00 [ 0.00](11.42) 1.00 [ 0.03](10.77) ================================================================== Test : schbench Units : Normalized 99th percentile latency in us Interpretation: Lower is better Statistic : Median ================================================================== #workers: tip[pct imp](CV) cpu-track[pct imp](CV) 1 1.00 [ -0.00](25.85) 0.76 [ 24.00]( 5.26) 2 1.00 [ -0.00](22.30) 1.17 [-16.67]( 4.41) 4 1.00 [ -0.00](16.86) 1.10 [-10.00]( 4.58) 8 1.00 [ -0.00](16.43) 0.88 [ 12.50](16.90) 16 1.00 [ -0.00]( 0.97) 1.03 [ -3.33]( 2.48) 32 1.00 [ -0.00]( 2.40) 1.01 [ -1.16]( 2.90) 64 1.00 [ -0.00]( 0.40) 1.00 [ -0.00]( 0.81) 128 1.00 [ -0.00]( 4.87) 1.01 [ -0.80]( 0.60) 256 1.00 [ -0.00]( 0.89) 1.01 [ -0.77]( 1.01) 512 1.00 [ -0.00]( 1.41) 1.00 [ -0.00]( 1.64) 768 1.00 [ -0.00]( 1.84) 0.98 [ 1.65]( 1.62) 1024 1.00 [ -0.00](13.59) 0.92 [ 7.57]( 4.64) ================================================================== Test : new-schbench-requests-per-second Units : Normalized Requests per second Interpretation: Higher is better Statistic : Median ================================================================== #workers: tip[pct imp](CV) cpu-track[pct imp](CV) 1 1.00 [ 0.00]( 0.00) 1.01 [ 0.59]( 0.15) 2 1.00 [ 0.00]( 0.15) 1.00 [ 0.30]( 0.00) 4 1.00 [ 0.00]( 0.00) 1.00 [ -0.29]( 0.00) 8 1.00 [ 0.00]( 0.00) 1.00 [ -0.29]( 0.00) 16 1.00 [ 0.00]( 0.15) 1.00 [ -0.29]( 0.00) 32 1.00 [ 0.00]( 0.15) 0.99 [ -0.59]( 0.00) 64 1.00 [ 0.00]( 0.00) 1.00 [ -0.29]( 0.00) 128 1.00 [ 0.00](14.82) 1.00 [ 0.00](17.39) 256 1.00 [ 0.00]( 0.15) 1.00 [ -0.28]( 0.64) 512 1.00 [ 0.00]( 1.40) 1.00 [ -0.39]( 1.73) 768 1.00 [ 0.00]( 1.81) 1.00 [ -0.25]( 1.56) 1024 1.00 [ 0.00]( 0.17) 1.00 [ -0.32]( 0.76) ================================================================== Test : new-schbench-wakeup-latency Units : Normalized 99th percentile latency in us Interpretation: Lower is better Statistic : Median ================================================================== #workers: tip[pct imp](CV) cpu-track[pct imp](CV) 1 1.00 [ -0.00](33.20) 1.21 [-21.43](25.04) 2 1.00 [ -0.00]( 5.00) 1.00 [ -0.00]( 8.94) 4 1.00 [ -0.00]( 5.53) 1.00 [ -0.00]( 5.53) 8 1.00 [ -0.00]( 0.00) 1.00 [ -0.00]( 0.00) 16 1.00 [ -0.00]( 4.43) 0.92 [ 8.33]( 8.13) 32 1.00 [ -0.00]( 4.84) 1.00 [ -0.00]( 0.00) 64 1.00 [ -0.00]( 0.00) 1.10 [-10.00]( 8.13) 128 1.00 [ -0.00]( 8.15) 0.90 [ 10.00](10.68) 256 1.00 [ -0.00]( 3.36) 0.95 [ 4.91]( 1.68) 512 1.00 [ -0.00](36.88) 1.01 [ -0.85](35.08) 768 1.00 [ -0.00]( 4.02) 1.00 [ -0.00]( 4.99) 1024 1.00 [ -0.00]( 1.61) 1.01 [ -0.78]( 0.87) ================================================================== Test : new-schbench-request-latency Units : Normalized 99th percentile latency in us Interpretation: Lower is better Statistic : Median ================================================================== #workers: tip[pct imp](CV) cpu-track[pct imp](CV) 1 1.00 [ -0.00]( 0.14) 1.00 [ 0.26]( 0.00) 2 1.00 [ -0.00]( 0.00) 1.00 [ 0.26]( 0.00) 4 1.00 [ -0.00]( 0.14) 1.00 [ -0.00]( 0.00) 8 1.00 [ -0.00]( 0.00) 1.01 [ -0.53]( 0.00) 16 1.00 [ -0.00]( 0.14) 1.01 [ -0.53]( 0.00) 32 1.00 [ -0.00]( 0.14) 1.01 [ -0.53]( 0.00) 64 1.00 [ -0.00]( 0.00) 1.01 [ -0.79]( 0.14) 128 1.00 [ -0.00]( 4.56) 0.99 [ 1.48](27.76) 256 1.00 [ -0.00]( 0.13) 1.00 [ -0.25]( 0.13) 512 1.00 [ -0.00](28.11) 1.00 [ -0.23](25.97) 768 1.00 [ -0.00](13.36) 0.99 [ 0.60](14.72) 1024 1.00 [ -0.00]( 1.46) 1.00 [ 0.32]( 6.83) -- Thanks and Regards, Prateek