From issues-return-8156-archive-asf-public=cust-asf.ponee.io@systemml.apache.org Thu Apr 5 23:09:03 2018 Return-Path: X-Original-To: archive-asf-public@cust-asf.ponee.io Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by mx-eu-01.ponee.io (Postfix) with SMTP id 693A218063B for ; Thu, 5 Apr 2018 23:09:03 +0200 (CEST) Received: (qmail 24433 invoked by uid 500); 5 Apr 2018 21:09:02 -0000 Mailing-List: contact issues-help@systemml.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: dev@systemml.apache.org Delivered-To: mailing list issues@systemml.apache.org Received: (qmail 24423 invoked by uid 99); 5 Apr 2018 21:09:02 -0000 Received: from pnap-us-west-generic-nat.apache.org (HELO spamd2-us-west.apache.org) (209.188.14.142) by apache.org (qpsmtpd/0.29) with ESMTP; Thu, 05 Apr 2018 21:09:02 +0000 Received: from localhost (localhost [127.0.0.1]) by spamd2-us-west.apache.org (ASF Mail Server at spamd2-us-west.apache.org) with ESMTP id 30A881A1647 for ; Thu, 5 Apr 2018 21:09:02 +0000 (UTC) X-Virus-Scanned: Debian amavisd-new at spamd2-us-west.apache.org X-Spam-Flag: NO X-Spam-Score: -102.311 X-Spam-Level: X-Spam-Status: No, score=-102.311 tagged_above=-999 required=6.31 tests=[RCVD_IN_DNSWL_MED=-2.3, SPF_PASS=-0.001, T_RP_MATCHES_RCVD=-0.01, USER_IN_WHITELIST=-100] autolearn=disabled Received: from mx1-lw-eu.apache.org ([10.40.0.8]) by localhost (spamd2-us-west.apache.org [10.40.0.9]) (amavisd-new, port 10024) with ESMTP id a2hE9b7tcBLW for ; Thu, 5 Apr 2018 21:09:01 +0000 (UTC) Received: from mailrelay1-us-west.apache.org (mailrelay1-us-west.apache.org [209.188.14.139]) by mx1-lw-eu.apache.org (ASF Mail Server at mx1-lw-eu.apache.org) with ESMTP id E69F75F1D5 for ; Thu, 5 Apr 2018 21:09:00 +0000 (UTC) Received: from jira-lw-us.apache.org (unknown [207.244.88.139]) by mailrelay1-us-west.apache.org (ASF Mail Server at mailrelay1-us-west.apache.org) with ESMTP id 39990E0117 for ; Thu, 5 Apr 2018 21:09:00 +0000 (UTC) Received: from jira-lw-us.apache.org (localhost [127.0.0.1]) by jira-lw-us.apache.org (ASF Mail Server at jira-lw-us.apache.org) with ESMTP id 0406F25619 for ; Thu, 5 Apr 2018 21:09:00 +0000 (UTC) Date: Thu, 5 Apr 2018 21:09:00 +0000 (UTC) From: "Matthias Boehm (JIRA)" To: issues@systemml.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Created] (SYSTEMML-2234) Memory leak buffer pool due to missing variable cleanup MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 Matthias Boehm created SYSTEMML-2234: ---------------------------------------- Summary: Memory leak buffer pool due to missing variable cleanup Key: SYSTEMML-2234 URL: https://issues.apache.org/jira/browse/SYSTEMML-2234 Project: SystemML Issue Type: Task Reporter: Matthias Boehm There are scenarios where variables are not properly cleaned up before assigning new matrices to logical variable names. This missing cleanup leads to a memory leak in the buffer pool, which in turn leads to unnecessary evictions and missing cleanup of FS and HDFS files. After a closer investigation, this issue occurs for special cases of function calls that have a peculiar control flow structure that prevents rmvar instructions for certain intermediates and thus requires cleanup of these intermediates after the function call. Furthermore, a similar issue occurs for loops with dedicated update-in place variables. -- This message was sent by Atlassian JIRA (v7.6.3#76005)