PreInstalled Application Launcher Module for PGRADE portal

1
Pre-Installed Application Launcher Module for
P-GRADE portal

• Goran Topic
• Ruder Bokovic Institute
• Zagreb, Croatia

2
Introduction

• Grid
• Not user friendly
• Portals
• Inflexible, or
• Not user friendly enough

3
Example

• parf t trainset.arff ri 1 c status cp cp
  single b 2048 bi 10000 n 2500 tc
  train_conf_matrix.txt i importances.txt tv
  train_votes.txt w 1.4,3,0.85,1 uu
  height,friends r 1 sd 3 st train_scale.txt p
  25

4
Idea

• Existence of application on a resource is the
  duty of resource admin, not the user
• Syntax of application invocation is the duty of
  portal admin, not the user
• The system needs to be flexible and allow for new
  applications to be added without code
  interventions

5
Solution

• Application definition files
• Syntax declaration file
• Presentation template file

6
Syntax Declaration

• XML file
• Describes all options of the application

7
DTD

• lt?xml version'1.0' encoding'utf-8'?gt
• lt!ELEMENT application (option)gt
• lt!ATTLIST application type (single
  multiple mpi pvm) "single"gt
• lt!ELEMENT option EMPTYgt
• lt!ATTLIST option name CDATA
  REQUIREDgt
• lt!ATTLIST option option CDATA
  IMPLIEDgt
• lt!-- null means not on cmdline, e.g.
  implicitly used files --gt
• lt!ATTLIST option file (input
  output none) "none"gt
• lt!ATTLIST option separator
  (equals space none) "space"gt
• lt!ATTLIST option multiple (yes
  no) "no"gt
• lt!-- can it be repeated on the command line?
  --gt
• lt!ATTLIST option arg (yes no)
  "yes"gt
• lt!-- can it accept an argument? --gt
• lt!ATTLIST option bare (yes no)
  IMPLIEDgt
• lt!-- can it stand without an argument? null
  means not(arg) --gt
• lt!ATTLIST option none (yes no)
  "yes"gt
• lt!-- can it be left off (no means mandatory
  option) --gt
• lt!ATTLIST option size CDATA "0"gt
• lt!-- size of the text box used for input --gt

8
Excerpt from parf.xml

• lt!DOCTYPE options SYSTEM "options.dtd"gt
• ltapplication type"mpi"gt
• ltoption name"verbose" option"--verbose"
  arg"no" /gt
• ltoption name"trainset" option"-t"
  file"input" /gt
• ltoption name"trainvotes" option"-tv"
  file"output" bare"yes" /gt
• ltoption name"trainconf" option"-tc"
  file"output" bare"yes" /gt
• ltoption name"class" option"-c" /gt
• lt!-- ... --gt
• lt/applicationgt

9
Presentation Template

• HTML file with option markers
• Determines the GUI layout
• Option markers syntax name
• The INPUT element type determined by option
  declaration

10
Excerpt from parf.tpt

• lth3gtPARFlt/h3gt
• verbose Verbose outputltbr /gt
• ltstylegtlt!--
• td
• vertical-align top
• --gtlt/stylegt
• lttablegtlttrgtlttdgt
• lttablegt
• lttrgt
• lttdgtTraining setlt/tdgt
• lttdgttrainsetlt/tdgt
• lt/trgt
• lttrgt
• lttdgtTraining classlt/tdgt
• lttdgtclasslt/tdgt
• lt/trgt
• lt!-- ... --gt
• lt/tablegt

11
Option Attributes

• To Do
• Options are unordered

12
Option Name

• Identifies the option in the template
• The option is inserted into HTML by a special
  sequence name
• Some names are reserved (i.e. automatically
  declared)
• stdout, stdin, stderr
• display
• count

13
Option Option

• Gives the option tag that is used in the command
  line
• For example, the following declaration will
  produce an input box (inserted by width), which,
  if filled with 320, will give -w 320 in the
  command line
• ltoption namewidth option-w/gt

14
Option File

• Controls the stage-in and stage-out mechanism
• If fileinput, the control is a file box,
  allowing the user to upload the file to the
  portal
• You can also type in a GridFTP URL

15
Option Separator

• Determines how the option tag is connected with
  its value
• equals -h320
• space -h 320
• none -h320

16
Option Multiple

• Allows an option to be specified several times,
  or none at all
• Use the Update button in the form to send the
  changes but stay in the form
• If a multiple option is filled, another form
  control is added to allow for the next value

17
Option Arg

• Determines whether the option is allowed to have
  an argument
• If yes, a text box is created
• If no, a check box is created
• The default is yes

18
Option Bare

• Determines whether the option is allowed not to
  have an argument
• The default is the opposite of arg
• If both bare and arg are yes, then both a
  text box and a check box are created, for options
  with optional values (e.g. both -p and -p 20
  are allowed)

19
Option None

• Determines whether it is allowed to leave the
  option off the command line (i.e. whether it is
  mandatory)
• The default is yes the option can be left off
  (it is not mandatory)

20
Option Size

• For the options that generate a text box,
  determines the width of that text box

21
Thank You