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/usr/share/pegasus/schema/iv-2.0.xsd is in pegasus-wms 4.0.1+dfsg-8.

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The actual contents of the file can be viewed below.

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<?xml version="1.0" encoding="ISO-8859-1"?>
<xs:schema targetNamespace="http://pegasus.isi.edu/schema/invocation" xmlns="http://pegasus.isi.edu/schema/invocation" xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified" version="2.0" xml:lang="en">
   <xs:simpleType name="DottedQuad">
      <xs:annotation>
         <xs:documentation>dotted quad notation of a IPv4 host address.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:minLength value="7"/>
         <xs:maxLength value="15"/>
         <xs:whiteSpace value="collapse"/>
         <xs:pattern value="(\d{1,3}\.){3}\d{1,3}"/>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="PositiveDecimal">
      <xs:annotation>
         <xs:documentation>restricted version of the 'decimal' type.</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:decimal">
         <xs:minInclusive value="0"/>
      </xs:restriction>
   </xs:simpleType>
   <xs:simpleType name="ResourceValue">
      <xs:annotation>
         <xs:documentation>value for a resource usage</xs:documentation>
      </xs:annotation>
      <xs:restriction base="xs:string">
         <xs:pattern value="(unlimited|\d+)"/>
      </xs:restriction>
   </xs:simpleType>
   <xs:complexType name="RUsageType" mixed="true">
      <xs:annotation>
         <xs:documentation>Information from the rusage record.</xs:documentation>
      </xs:annotation>
      <xs:attribute name="utime" type="xs:decimal" use="required">
         <xs:annotation>
            <xs:documentation>Total amount of user time used, in seconds with millisecond fraction.</xs:documentation>
         </xs:annotation>
      </xs:attribute>
      <xs:attribute name="stime" type="xs:decimal" use="required">
         <xs:annotation>
            <xs:documentation>Total amount of system time used, in seconds with millisecond fraction.</xs:documentation>
         </xs:annotation>
      </xs:attribute>
      <xs:attribute name="minflt" type="xs:unsignedLong" use="required">
         <xs:annotation>
            <xs:documentation>Number of soft page faults (i.e. those serviced by reclaiming a page from the list of pages awaiting reallocation.</xs:documentation>
         </xs:annotation>
      </xs:attribute>
      <xs:attribute name="majflt" type="xs:unsignedLong" use="required">
         <xs:annotation>
            <xs:documentation>Number of hard page faults (i.e. those that required I/O). </xs:documentation>
         </xs:annotation>
      </xs:attribute>
      <xs:attribute name="nswap" type="xs:unsignedLong" use="required">
         <xs:annotation>
            <xs:documentation>Number of times a process was swapped out of physical memory.</xs:documentation>
         </xs:annotation>
      </xs:attribute>
      <xs:attribute name="nsignals" type="xs:unsignedLong" use="required">
         <xs:annotation>
            <xs:documentation>Number of signals delivered.</xs:documentation>
         </xs:annotation>
      </xs:attribute>
      <xs:attribute name="nvcsw" type="xs:unsignedLong" use="optional">
         <xs:annotation>
            <xs:documentation>Number of voluntary context switches, i.e. because the process gave up the process before it had to (usually to wait for some resource to be available).</xs:documentation>
         </xs:annotation>
      </xs:attribute>
      <xs:attribute name="nivcsw" type="xs:unsignedLong" use="optional">
         <xs:annotation>
            <xs:documentation>Number of involuntary context switches, i.e. a higher priority process became runnable or the current process used up its time slice.</xs:documentation>
         </xs:annotation>
      </xs:attribute>
      <xs:attribute name="maxrss" type="xs:unsignedLong" use="optional"/>
      <xs:attribute name="ixrss" type="xs:unsignedLong" use="optional"/>
      <xs:attribute name="idrss" type="xs:unsignedLong" use="optional"/>
      <xs:attribute name="isrss" type="xs:unsignedLong" use="optional"/>
      <xs:attribute name="inblock" type="xs:unsignedLong" use="optional"/>
      <xs:attribute name="outblock" type="xs:unsignedLong" use="optional"/>
      <xs:attribute name="msgsnd" type="xs:unsignedLong" use="optional"/>
      <xs:attribute name="msgrcv" type="xs:unsignedLong" use="optional"/>
   </xs:complexType>
   <xs:complexType name="StatCallType">
      <xs:annotation>
         <xs:documentation>Information about a named file or descriptor.</xs:documentation>
      </xs:annotation>
      <xs:sequence>
         <xs:choice>
            <xs:element name="file">
               <xs:annotation>
                  <xs:documentation>Named file in filesystem.</xs:documentation>
               </xs:annotation>
               <xs:complexType>
                  <xs:simpleContent>
                     <xs:extension base="xs:hexBinary">
                        <xs:attribute name="name" type="xs:string" use="required">
                           <xs:annotation>
                              <xs:documentation>A named file may be a regular file like a shell script or executable, or it may be a device file like /dev/null. Only regular files may incur element content. </xs:documentation>
                           </xs:annotation>
                        </xs:attribute>
                     </xs:extension>
                  </xs:simpleContent>
               </xs:complexType>
            </xs:element>
            <xs:element name="descriptor">
               <xs:annotation>
                  <xs:documentation>Pre-opened descriptor.</xs:documentation>
               </xs:annotation>
               <xs:complexType>
                  <xs:attribute name="number" type="xs:nonNegativeInteger" use="required"/>
               </xs:complexType>
            </xs:element>
            <xs:element name="temporary">
               <xs:annotation>
                  <xs:documentation>Created temporary file.</xs:documentation>
               </xs:annotation>
               <xs:complexType>
                  <xs:attribute name="name" type="xs:string" use="required"/>
                  <xs:attribute name="descriptor" type="xs:integer" use="required"/>
               </xs:complexType>
            </xs:element>
            <xs:element name="fifo">
               <xs:annotation>
                  <xs:documentation>Auto-created feedback FIFO.</xs:documentation>
               </xs:annotation>
               <xs:complexType>
                  <xs:attribute name="name" type="xs:string" use="required"/>
                  <xs:attribute name="descriptor" type="xs:integer" use="required"/>
                  <xs:attribute name="count" type="xs:nonNegativeInteger" use="optional" default="0"/>
                  <xs:attribute name="rsize" type="xs:nonNegativeInteger" use="optional" default="0"/>
                  <xs:attribute name="wsize" type="xs:nonNegativeInteger" use="optional" default="0"/>
               </xs:complexType>
            </xs:element>
         </xs:choice>
         <xs:element name="statinfo" minOccurs="0">
            <xs:annotation>
               <xs:documentation>Kernel inode information.</xs:documentation>
            </xs:annotation>
            <xs:complexType>
               <xs:attribute name="size" type="xs:integer" use="required"/>
               <xs:attribute name="mode" type="xs:token" use="optional">
                  <xs:annotation>
                     <xs:documentation>file protection in octal number with leading zero.</xs:documentation>
                  </xs:annotation>
               </xs:attribute>
               <xs:attribute name="inode" type="xs:integer" use="optional"/>
               <xs:attribute name="nlink" type="xs:nonNegativeInteger" use="optional"/>
               <xs:attribute name="blocks" type="xs:nonNegativeInteger" use="optional"/>
               <xs:attribute name="blksize" type="xs:nonNegativeInteger" use="optional"/>
               <xs:attribute name="atime" type="xs:dateTime" use="optional"/>
               <xs:attribute name="mtime" type="xs:dateTime" use="optional"/>
               <xs:attribute name="ctime" type="xs:dateTime" use="optional"/>
               <xs:attribute name="uid" type="xs:integer" use="optional"/>
               <xs:attribute name="user" type="xs:string" use="optional"/>
               <xs:attribute name="gid" type="xs:integer" use="optional"/>
               <xs:attribute name="group" type="xs:string" use="optional"/>
            </xs:complexType>
         </xs:element>
         <xs:element name="data" minOccurs="0">
            <xs:annotation>
               <xs:documentation>One page of content from temporary files.</xs:documentation>
            </xs:annotation>
            <xs:complexType>
               <xs:simpleContent>
                  <xs:extension base="xs:string">
                     <xs:attribute name="truncated" type="xs:boolean" use="optional">
                        <xs:annotation>
                           <xs:documentation>This flag will be true, if there is more information than included in the data tag. </xs:documentation>
                        </xs:annotation>
                     </xs:attribute>
                  </xs:extension>
               </xs:simpleContent>
            </xs:complexType>
         </xs:element>
      </xs:sequence>
      <xs:attribute name="error" type="xs:int" use="required">
         <xs:annotation>
            <xs:documentation>result from the stat call on a named file or descriptor.

</xs:documentation>
         </xs:annotation>
      </xs:attribute>
   </xs:complexType>
   <xs:complexType name="JobType">
      <xs:annotation>
         <xs:documentation>Information about a specific job that ran as part of the invocation.</xs:documentation>
      </xs:annotation>
      <xs:sequence>
         <xs:element name="usage" type="RUsageType">
            <xs:annotation>
               <xs:documentation>Excerpt of the struct rusage returned for the application.</xs:documentation>
            </xs:annotation>
         </xs:element>
         <xs:element name="status">
            <xs:annotation>
               <xs:documentation>Exit status of application, which may be a signal with core dump.</xs:documentation>
            </xs:annotation>
            <xs:complexType>
               <xs:choice>
                  <xs:element name="failure">
                     <xs:annotation>
                        <xs:documentation>Failure to start application. This is an error by gridstart.</xs:documentation>
                     </xs:annotation>
                     <xs:complexType>
                        <xs:simpleContent>
                           <xs:extension base="xs:string">
                              <xs:attribute name="error" type="xs:short" use="required"/>
                           </xs:extension>
                        </xs:simpleContent>
                     </xs:complexType>
                  </xs:element>
                  <xs:element name="regular">
                     <xs:annotation>
                        <xs:documentation>Controlled application exit, may indicate error.</xs:documentation>
                     </xs:annotation>
                     <xs:complexType>
                        <xs:attribute name="exitcode" type="xs:unsignedByte" use="required"/>
                     </xs:complexType>
                  </xs:element>
                  <xs:element name="signalled">
                     <xs:annotation>
                        <xs:documentation>Application died on signal.</xs:documentation>
                     </xs:annotation>
                     <xs:complexType>
                        <xs:simpleContent>
                           <xs:extension base="xs:string">
                              <xs:attribute name="signal" type="xs:byte" use="required"/>
                              <xs:attribute name="corefile" type="xs:boolean" use="optional"/>
                           </xs:extension>
                        </xs:simpleContent>
                     </xs:complexType>
                  </xs:element>
                  <xs:element name="suspended">
                     <xs:annotation>
                        <xs:documentation>This should not happen.</xs:documentation>
                     </xs:annotation>
                     <xs:complexType>
                        <xs:simpleContent>
                           <xs:extension base="xs:string">
                              <xs:attribute name="signal" type="xs:byte" use="required"/>
                           </xs:extension>
                        </xs:simpleContent>
                     </xs:complexType>
                  </xs:element>
               </xs:choice>
               <xs:attribute name="raw" type="xs:int" use="required"/>
            </xs:complexType>
         </xs:element>
         <xs:element name="statcall" type="StatCallType">
            <xs:annotation>
               <xs:documentation>Inode information about the application that was run.</xs:documentation>
            </xs:annotation>
         </xs:element>
         <xs:choice>
            <xs:element name="arguments">
               <xs:annotation>
                  <xs:documentation>Name and arguments of the executable of application.</xs:documentation>
               </xs:annotation>
               <xs:complexType>
                  <xs:simpleContent>
                     <xs:extension base="xs:string">
                        <xs:attribute name="executable" type="xs:string" use="optional">
                           <xs:annotation>
                              <xs:documentation>DEPRECATED - redundant attribute will be dropped soon.</xs:documentation>
                           </xs:annotation>
                        </xs:attribute>
                     </xs:extension>
                  </xs:simpleContent>
               </xs:complexType>
            </xs:element>
            <xs:element name="argument-vector">
               <xs:annotation>
                  <xs:documentation>Enumerates the argument vector for debugging.</xs:documentation>
               </xs:annotation>
               <xs:complexType>
                  <xs:sequence minOccurs="0" maxOccurs="unbounded">
                     <xs:element name="arg">
                        <xs:annotation>
                           <xs:documentation>Single argument vector entry.</xs:documentation>
                        </xs:annotation>
                        <xs:complexType>
                           <xs:simpleContent>
                              <xs:extension base="xs:string">
                                 <xs:attribute name="nr" type="xs:nonNegativeInteger" use="required"/>
                              </xs:extension>
                           </xs:simpleContent>
                        </xs:complexType>
                     </xs:element>
                  </xs:sequence>
                  <xs:attribute name="executable" type="xs:string" use="optional"/>
               </xs:complexType>
            </xs:element>
         </xs:choice>
      </xs:sequence>
      <xs:attribute name="start" type="xs:dateTime" use="required"/>
      <xs:attribute name="duration" type="PositiveDecimal" use="required"/>
      <xs:attribute name="pid" type="xs:decimal" use="optional"/>
   </xs:complexType>
   <xs:element name="invocation">
      <xs:annotation>
         <xs:documentation>record of an application run for a given TR and DV.</xs:documentation>
      </xs:annotation>
      <xs:complexType>
         <xs:sequence>
            <xs:element name="setup" type="JobType" minOccurs="0">
               <xs:annotation>
                  <xs:documentation>Optional job to run independently first.</xs:documentation>
               </xs:annotation>
            </xs:element>
            <xs:element name="prejob" type="JobType" minOccurs="0">
               <xs:annotation>
                  <xs:documentation>Optional job to run before invoking the application.</xs:documentation>
               </xs:annotation>
            </xs:element>
            <xs:element name="mainjob" type="JobType" minOccurs="0">
               <xs:annotation>
                  <xs:documentation>The application itself.</xs:documentation>
               </xs:annotation>
            </xs:element>
            <xs:element name="postjob" type="JobType" minOccurs="0">
               <xs:annotation>
                  <xs:documentation>Optional job to run after invoking the application.</xs:documentation>
               </xs:annotation>
            </xs:element>
            <xs:element name="cleanup" type="JobType" minOccurs="0">
               <xs:annotation>
                  <xs:documentation>Optional job to run independently last.</xs:documentation>
               </xs:annotation>
            </xs:element>
            <xs:element name="cwd">
               <xs:annotation>
                  <xs:documentation>Record the current working directory at time of execution.</xs:documentation>
               </xs:annotation>
               <xs:simpleType>
                  <xs:restriction base="xs:string">
                     <xs:maxLength value="4096"/>
                     <xs:whiteSpace value="preserve"/>
                  </xs:restriction>
               </xs:simpleType>
            </xs:element>
            <xs:element name="usage" type="RUsageType">
               <xs:annotation>
                  <xs:documentation>Resource usage recorded of gridstart itself.</xs:documentation>
               </xs:annotation>
            </xs:element>
            <xs:element name="uname">
               <xs:annotation>
                  <xs:documentation>Report architecture information.</xs:documentation>
               </xs:annotation>
               <xs:complexType>
                  <xs:simpleContent>
                     <xs:extension base="xs:token">
                        <xs:attribute name="archmode" use="optional">
                           <xs:annotation>
                              <xs:documentation>IA32, IA64, ILP32, LP64</xs:documentation>
                           </xs:annotation>
                           <xs:simpleType>
                              <xs:restriction base="xs:NMTOKEN">
                                 <xs:maxLength value="16"/>
                                 <xs:minLength value="4"/>
                              </xs:restriction>
                           </xs:simpleType>
                        </xs:attribute>
                        <xs:attribute name="system" type="xs:NMTOKEN" use="required"/>
                        <xs:attribute name="nodename" type="xs:NMTOKEN" use="required"/>
                        <xs:attribute name="release" type="xs:NMTOKEN" use="required"/>
                        <xs:attribute name="machine" type="xs:NMTOKEN" use="required"/>
                        <xs:attribute name="domainname" type="xs:NMTOKEN" use="optional"/>
                     </xs:extension>
                  </xs:simpleContent>
               </xs:complexType>
            </xs:element>
            <xs:element name="statcall" maxOccurs="unbounded">
               <xs:annotation>
                  <xs:documentation>Inode info on shared and outside apps and streams.</xs:documentation>
               </xs:annotation>
               <xs:complexType>
                  <xs:complexContent>
                     <xs:extension base="StatCallType">
                        <xs:attribute name="id" use="required">
                           <xs:simpleType>
                              <xs:restriction base="xs:NMTOKEN">
                                 <xs:enumeration value="gridstart"/>
                                 <xs:enumeration value="stdin"/>
                                 <xs:enumeration value="stdout"/>
                                 <xs:enumeration value="stderr"/>
                                 <xs:enumeration value="logfile"/>
                                 <xs:enumeration value="channel"/>
                                 <xs:enumeration value="initial"/>
                                 <xs:enumeration value="final"/>
                              </xs:restriction>
                           </xs:simpleType>
                        </xs:attribute>
                        <xs:attribute name="lfn" type="xs:NMTOKEN" use="optional"/>
                     </xs:extension>
                  </xs:complexContent>
               </xs:complexType>
            </xs:element>
            <xs:element name="environment" minOccurs="0">
               <xs:annotation>
                  <xs:documentation>Environment setting as seen by process.</xs:documentation>
               </xs:annotation>
               <xs:complexType>
                  <xs:sequence minOccurs="0" maxOccurs="unbounded">
                     <xs:element name="env">
                        <xs:annotation>
                           <xs:documentation>single environment key-value pair.</xs:documentation>
                        </xs:annotation>
                        <xs:complexType>
                           <xs:simpleContent>
                              <xs:extension base="xs:string">
                                 <xs:attribute name="key" type="xs:string" use="required"/>
                              </xs:extension>
                           </xs:simpleContent>
                        </xs:complexType>
                     </xs:element>
                  </xs:sequence>
               </xs:complexType>
            </xs:element>
            <xs:element name="resource" minOccurs="0">
               <xs:annotation>
                  <xs:documentation>Resource limits as imposed by the compute enviroment.</xs:documentation>
               </xs:annotation>
               <xs:complexType>
                  <xs:choice minOccurs="0" maxOccurs="unbounded">
                     <xs:element name="soft">
                        <xs:complexType>
                           <xs:simpleContent>
                              <xs:extension base="ResourceValue">
                                 <xs:attribute name="id" type="xs:NMTOKEN" use="required"/>
                              </xs:extension>
                           </xs:simpleContent>
                        </xs:complexType>
                     </xs:element>
                     <xs:element name="hard">
                        <xs:complexType>
                           <xs:simpleContent>
                              <xs:extension base="ResourceValue">
                                 <xs:attribute name="id" type="xs:NMTOKEN" use="required"/>
                              </xs:extension>
                           </xs:simpleContent>
                        </xs:complexType>
                     </xs:element>
                  </xs:choice>
               </xs:complexType>
            </xs:element>
         </xs:sequence>
         <xs:attribute name="version" use="required">
            <xs:simpleType>
               <xs:restriction base="xs:NMTOKEN">
                  <xs:pattern value="[0-9]+\.[0-9]+"/>
               </xs:restriction>
            </xs:simpleType>
         </xs:attribute>
         <xs:attribute name="start" type="xs:dateTime" use="required">
            <xs:annotation>
               <xs:documentation>Start of application according to host clock.</xs:documentation>
            </xs:annotation>
         </xs:attribute>
         <xs:attribute name="duration" type="PositiveDecimal" use="required">
            <xs:annotation>
               <xs:documentation>Duration of application run in seconds with microsecond fraction, according to host clock.</xs:documentation>
            </xs:annotation>
         </xs:attribute>
         <xs:attribute name="transformation" type="xs:string" use="optional" default="null"/>
         <xs:attribute name="derivation" type="xs:string" use="optional" default="null"/>
         <xs:attribute name="resource" type="xs:string" use="optional"/>
         <xs:attribute name="hostaddr" type="DottedQuad" use="optional" default="0.0.0.0">
            <xs:annotation>
               <xs:documentation>Host address of the primary interface, as far as discernable.</xs:documentation>
            </xs:annotation>
         </xs:attribute>
         <xs:attribute name="hostname" type="xs:string" use="optional"/>
         <xs:attribute name="ram" type="xs:nonNegativeInteger" use="optional"/>
         <xs:attribute name="pid" type="xs:decimal" use="optional">
            <xs:annotation>
               <xs:documentation>process number of the gridlaunch application itself.</xs:documentation>
            </xs:annotation>
         </xs:attribute>
         <xs:attribute name="uid" type="xs:integer" use="optional">
            <xs:annotation>
               <xs:documentation>real user id on the compute node that started grid launch.</xs:documentation>
            </xs:annotation>
         </xs:attribute>
         <xs:attribute name="user" type="xs:string" use="optional"/>
         <xs:attribute name="gid" type="xs:integer" use="optional">
            <xs:annotation>
               <xs:documentation>real group id of the user that started gridlaunch</xs:documentation>
            </xs:annotation>
         </xs:attribute>
         <xs:attribute name="group" type="xs:string" use="optional"/>
         <xs:attribute name="wf-label" type="xs:string" use="optional"/>
         <xs:attribute name="wf-stamp" type="xs:dateTime" use="optional"/>
         <xs:attribute name="umask" type="xs:token" use="optional"/>
      </xs:complexType>
   </xs:element>
</xs:schema>