Patents by Inventor Abdelkader Sellami

Abdelkader Sellami has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Adaptive table placement in NUMA architectures
    Patent number: 11275721
    Abstract: Techniques and solutions are provided for performing adaptive database table placement in a non-uniform memory access (NUMA) architecture. The adaptive table placement can occur in response to changing workloads on the NUMA nodes. For example, if a particular NUMA node is saturated, a database table may be moved from the memory of the saturated NUMA node to the memory of another NUMA node that is underutilized. In some cases, an entire database table is moved, while in other cases the database table is partitioned and only part of the table is moved.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: March 15, 2022
    Assignee: SAP SE
    Inventors: Tobias Scheuer, Iraklis Psaroudakis, Abdelkader Sellami, Norman May, Anastasia Ailamaki
  • Column store main fragments in non-volatile RAM and the column store main fragments are merged with delta fragments, wherein the column store main fragments are not allocated to volatile random access memory and initialized from disk
    Patent number: 10824673
    Abstract: A system includes a non-volatile random access memory storing a column store main fragment of a column of a database table, and a processing unit to read the column store main fragment from the non-volatile random access memory. A volatile random access memory storing a column store delta fragment of the column of the database table may also be included, in which the processing unit is to write to the column store delta fragment. According to some systems, the stored column store main fragment is byte-addressable, and is copied from the volatile random access memory to the non-volatile random access memory without using a filesystem cache.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: November 3, 2020
    Assignee: SAP SE
    Inventors: Oliver Rebholz, Ivan Schreter, Abdelkader Sellami, Daniel Booss, Gunter Radestock, Peter Bumbulis, Alexander Boehm, Frank Renkes, Werner Thesing, Thomas Willhalm
  • COLUMN STORE MAIN FRAGMENTS IN NON-VOLATILE RAM
    Publication number: 20180246809
    Abstract: A system includes a non-volatile random access memory storing a column store main fragment of a column of a database table, and a processing unit to read the column store main fragment from the non-volatile random access memory. A volatile random access memory storing a column store delta fragment of the column of the database table may also be included, in which the processing unit is to write to the column store delta fragment. According to some systems, the stored column store main fragment is byte-addressable, and is copied from the volatile random access memory to the non-volatile random access memory without using a filesystem cache.
    Type: Application
    Filed: September 5, 2017
    Publication date: August 30, 2018
    Inventors: Oliver Rebholz, Ivan Schreter, Abdelkader Sellami, Daniel Booss, Gunter Radestock, Peter Bumbulis, Alexander Boehm, Frank Renkes, Werner Thesing, Thomas Willhalm
  • ADAPTIVE TABLE PLACEMENT IN NUMA ARCHITECTURES
    Publication number: 20170017674
    Abstract: Techniques and solutions are provided for performing adaptive database table placement in a non-uniform memory access (NUMA) architecture. The adaptive table placement can occur in response to changing workloads on the NUMA nodes. For example, if a particular NUMA node is saturated, a database table may be moved from the memory of the saturated NUMA node to the memory of another NUMA node that is underutilized. In some cases, an entire database table is moved, while in other cases the database table is partitioned and only part of the table is moved.
    Type: Application
    Filed: July 17, 2015
    Publication date: January 19, 2017
    Inventors: Tobias Scheuer, Iraklis Psaroudakis, Abdelkader Sellami, Norman May, Anastasia Ailamaki